diff --git a/app/soapbox/components/ui/emoji-selector/emoji-selector.tsx b/app/soapbox/components/ui/emoji-selector/emoji-selector.tsx
index 55e98b048..a4485e79f 100644
--- a/app/soapbox/components/ui/emoji-selector/emoji-selector.tsx
+++ b/app/soapbox/components/ui/emoji-selector/emoji-selector.tsx
@@ -1,11 +1,10 @@
-import { Placement } from '@popperjs/core';
+import { shift, useFloating, Placement, offset, OffsetOptions } from '@floating-ui/react';
 import clsx from 'clsx';
 import React, { useEffect, useState } from 'react';
-import { usePopper } from 'react-popper';
 
 import { Emoji as EmojiComponent, HStack, IconButton } from 'soapbox/components/ui';
 import EmojiPickerDropdown from 'soapbox/features/emoji/components/emoji-picker-dropdown';
-import { useFeatures, useSoapboxConfig } from 'soapbox/hooks';
+import { useClickOutside, useFeatures, useSoapboxConfig } from 'soapbox/hooks';
 
 import type { Emoji } from 'soapbox/features/emoji';
 
@@ -45,8 +44,7 @@ interface IEmojiSelector {
   placement?: Placement
   /** Whether the selector should be visible. */
   visible?: boolean
-  /** X/Y offset of the floating picker. */
-  offset?: [number, number]
+  offsetOptions?: OffsetOptions
   /** Whether to allow any emoji to be chosen. */
   all?: boolean
 }
@@ -58,7 +56,7 @@ const EmojiSelector: React.FC<IEmojiSelector> = ({
   onReact,
   placement = 'top',
   visible = false,
-  offset = [-10, 0],
+  offsetOptions,
   all = true,
 }): JSX.Element => {
   const soapboxConfig = useSoapboxConfig();
@@ -66,36 +64,9 @@ const EmojiSelector: React.FC<IEmojiSelector> = ({
 
   const [expanded, setExpanded] = useState(false);
 
-  // `useRef` won't trigger a re-render, while `useState` does.
-  // https://popper.js.org/react-popper/v2/
-  const [popperElement, setPopperElement] = useState<HTMLDivElement | null>(null);
-
-  const handleClickOutside = (event: MouseEvent) => {
-    if ([referenceElement, popperElement, document.querySelector('em-emoji-picker')].some(el => el?.contains(event.target as Node))) {
-      return;
-    }
-
-    if (document.querySelector('em-emoji-picker')) {
-      event.preventDefault();
-      event.stopPropagation();
-      return setExpanded(false);
-    }
-
-    if (onClose) {
-      onClose();
-    }
-  };
-
-  const { styles, attributes, update } = usePopper(referenceElement, popperElement, {
+  const { x, y, strategy, refs, update } = useFloating<HTMLElement>({
     placement,
-    modifiers: [
-      {
-        name: 'offset',
-        options: {
-          offset,
-        },
-      },
-    ],
+    middleware: [offset(offsetOptions), shift()],
   });
 
   const handleExpand: React.MouseEventHandler = () => {
@@ -106,6 +77,10 @@ const EmojiSelector: React.FC<IEmojiSelector> = ({
     onReact(emoji.custom ? emoji.id : emoji.native, emoji.custom ? emoji.imageUrl : undefined);
   };
 
+  useEffect(() => {
+    refs.setReference(referenceElement);
+  }, [referenceElement]);
+
   useEffect(() => () => {
     document.body.style.overflow = '';
   }, []);
@@ -114,35 +89,24 @@ const EmojiSelector: React.FC<IEmojiSelector> = ({
     setExpanded(false);
   }, [visible]);
 
-  useEffect(() => {
-    document.addEventListener('mousedown', handleClickOutside);
-
-    return () => {
-      document.removeEventListener('mousedown', handleClickOutside);
-    };
-  }, [referenceElement, popperElement]);
-
-  useEffect(() => {
-    if (visible && update) {
-      update();
+  useClickOutside(refs, () => {
+    if (onClose) {
+      onClose();
     }
-  }, [visible, update]);
-
-  useEffect(() => {
-    if (expanded && update) {
-      update();
-    }
-  }, [expanded, update]);
-
+  });
 
   return (
     <div
       className={clsx('z-[101] transition-opacity duration-100', {
         'opacity-0 pointer-events-none': !visible,
       })}
-      ref={setPopperElement}
-      style={styles.popper}
-      {...attributes.popper}
+      ref={refs.setFloating}
+      style={{
+        position: strategy,
+        top: y ?? 0,
+        left: x ?? 0,
+        width: 'max-content',
+      }}
     >
       {expanded ? (
         <EmojiPickerDropdown
diff --git a/app/soapbox/features/chats/components/chat-composer.tsx b/app/soapbox/features/chats/components/chat-composer.tsx
index 11b22ba5d..c5e4900e2 100644
--- a/app/soapbox/features/chats/components/chat-composer.tsx
+++ b/app/soapbox/features/chats/components/chat-composer.tsx
@@ -110,7 +110,7 @@ const ChatComposer = React.forwardRef<HTMLTextAreaElement | null, IChatComposer>
     );
 
     if (token && tokenStart) {
-      const results = emojiSearch(token.replace(':', ''), { maxResults: 5 } as any);
+      const results = emojiSearch(token.replace(':', ''), { maxResults: 5 });
       setSuggestions({
         list: results,
         token,
diff --git a/app/soapbox/features/chats/components/chat-message-reaction-wrapper/chat-message-reaction-wrapper.tsx b/app/soapbox/features/chats/components/chat-message-reaction-wrapper/chat-message-reaction-wrapper.tsx
index 03cbf23a7..91e959f7c 100644
--- a/app/soapbox/features/chats/components/chat-message-reaction-wrapper/chat-message-reaction-wrapper.tsx
+++ b/app/soapbox/features/chats/components/chat-message-reaction-wrapper/chat-message-reaction-wrapper.tsx
@@ -44,7 +44,7 @@ function ChatMessageReactionWrapper(props: IChatMessageReactionWrapper) {
             referenceElement={referenceElement}
             onReact={handleSelect}
             onClose={() => setIsOpen(false)}
-            offset={[-10, 12]}
+            offsetOptions={{ mainAxis: 12, crossAxis: -10 }}
             all={false}
           />
         </Portal>
diff --git a/app/soapbox/features/chats/components/chat-textarea.tsx b/app/soapbox/features/chats/components/chat-textarea.tsx
index 111a4cdc9..f6ee67b93 100644
--- a/app/soapbox/features/chats/components/chat-textarea.tsx
+++ b/app/soapbox/features/chats/components/chat-textarea.tsx
@@ -14,13 +14,13 @@ interface IChatTextarea extends React.ComponentProps<typeof Textarea> {
 }
 
 /** Custom textarea for chats. */
-const ChatTextarea: React.FC<IChatTextarea> = ({
+const ChatTextarea: React.FC<IChatTextarea> = React.forwardRef(({
   attachments,
   onDeleteAttachment,
   uploadCount = 0,
   uploadProgress = 0,
   ...rest
-}) => {
+}, ref) => {
   const isUploading = uploadCount > 0;
 
   const handleDeleteAttachment = (i: number) => {
@@ -64,9 +64,9 @@ const ChatTextarea: React.FC<IChatTextarea> = ({
         </HStack>
       )}
 
-      <Textarea theme='transparent' {...rest} />
+      <Textarea ref={ref} theme='transparent' {...rest} />
     </div>
   );
-};
+});
 
 export default ChatTextarea;
diff --git a/app/soapbox/features/emoji/components/emoji-picker-dropdown.tsx b/app/soapbox/features/emoji/components/emoji-picker-dropdown.tsx
index 7e6bd2414..3f486502e 100644
--- a/app/soapbox/features/emoji/components/emoji-picker-dropdown.tsx
+++ b/app/soapbox/features/emoji/components/emoji-picker-dropdown.tsx
@@ -11,7 +11,6 @@ import { RootState } from 'soapbox/store';
 import { buildCustomEmojis } from '../../emoji';
 import { EmojiPicker as EmojiPickerAsync } from '../../ui/util/async-components';
 
-import type { State as PopperState } from '@popperjs/core';
 import type { Emoji, CustomEmoji, NativeEmoji } from 'soapbox/features/emoji';
 
 let EmojiPicker: any; // load asynchronously
@@ -49,7 +48,7 @@ export interface IEmojiPickerDropdown {
   withCustom?: boolean
   visible: boolean
   setVisible: (value: boolean) => void
-  update: (() => Promise<Partial<PopperState>>) | null
+  update: (() => any) | null
 }
 
 const perLine = 8;
diff --git a/app/soapbox/features/emoji/containers/emoji-picker-dropdown-container.tsx b/app/soapbox/features/emoji/containers/emoji-picker-dropdown-container.tsx
index 47dea8d6f..5929d1711 100644
--- a/app/soapbox/features/emoji/containers/emoji-picker-dropdown-container.tsx
+++ b/app/soapbox/features/emoji/containers/emoji-picker-dropdown-container.tsx
@@ -1,17 +1,14 @@
+import { useFloating, shift } from '@floating-ui/react';
 import clsx from 'clsx';
-import { supportsPassiveEvents } from 'detect-passive-events';
-import React, { KeyboardEvent, useEffect, useState } from 'react';
+import React, { KeyboardEvent, useState } from 'react';
 import { createPortal } from 'react-dom';
 import { defineMessages, useIntl } from 'react-intl';
-import { usePopper } from 'react-popper';
 
 import { IconButton } from 'soapbox/components/ui';
-import { isMobile } from 'soapbox/is-mobile';
+import { useClickOutside } from 'soapbox/hooks';
 
 import EmojiPickerDropdown, { IEmojiPickerDropdown } from '../components/emoji-picker-dropdown';
 
-const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
-
 export const messages = defineMessages({
   emoji: { id: 'emoji_button.label', defaultMessage: 'Insert emoji' },
 });
@@ -22,51 +19,28 @@ const EmojiPickerDropdownContainer = (
   const intl = useIntl();
   const title = intl.formatMessage(messages.emoji);
 
-  const [popperElement, setPopperElement] = useState<HTMLDivElement | null>(null);
-  const [popperReference, setPopperReference] = useState<HTMLButtonElement | null>(null);
-  const [containerElement, setContainerElement] = useState<HTMLDivElement | null>(null);
-
   const [visible, setVisible] = useState(false);
 
-  const placement = props.condensed ? 'bottom-start' : 'top-start';
-  const { styles, attributes, update } = usePopper(popperReference, popperElement, {
-    placement: isMobile(window.innerWidth) ? 'auto' : placement,
+  const { x, y, strategy, refs, update } = useFloating<HTMLButtonElement>({
+    middleware: [shift()],
   });
 
-  const handleDocClick = (e: any) => {
-    if (!containerElement?.contains(e.target) && !popperElement?.contains(e.target)) {
-      setVisible(false);
-    }
-  };
+  useClickOutside(refs, () => {
+    setVisible(false);
+  });
 
   const handleToggle = (e: MouseEvent | KeyboardEvent) => {
     e.stopPropagation();
     setVisible(!visible);
   };
 
-  // TODO: move to class
-  const style: React.CSSProperties = !isMobile(window.innerWidth) ? styles.popper : {
-    ...styles.popper, width: '100%',
-  };
-
-  useEffect(() => {
-    document.addEventListener('click', handleDocClick, false);
-    document.addEventListener('touchend', handleDocClick, listenerOptions);
-
-    return () => {
-      document.removeEventListener('click', handleDocClick, false);
-      // @ts-ignore
-      document.removeEventListener('touchend', handleDocClick, listenerOptions);
-    };
-  });
-
   return (
-    <div className='relative' ref={setContainerElement}>
+    <div className='relative'>
       <IconButton
         className={clsx({
           'text-gray-600 hover:text-gray-700 dark:hover:text-gray-500': true,
         })}
-        ref={setPopperReference}
+        ref={refs.setReference}
         src={require('@tabler/icons/mood-happy.svg')}
         title={title}
         aria-label={title}
@@ -80,11 +54,20 @@ const EmojiPickerDropdownContainer = (
       {createPortal(
         <div
           className='z-[101]'
-          ref={setPopperElement}
-          style={style}
-          {...attributes.popper}
+          ref={refs.setFloating}
+          style={{
+            position: strategy,
+            top: y ?? 0,
+            left: x ?? 0,
+            width: 'max-content',
+          }}
         >
-          <EmojiPickerDropdown visible={visible} setVisible={setVisible} update={update} {...props} />
+          <EmojiPickerDropdown
+            visible={visible}
+            setVisible={setVisible}
+            update={update}
+            {...props}
+          />
         </div>,
         document.body,
       )}
diff --git a/app/soapbox/features/emoji/search.ts b/app/soapbox/features/emoji/search.ts
index 119636a29..dbcb29756 100644
--- a/app/soapbox/features/emoji/search.ts
+++ b/app/soapbox/features/emoji/search.ts
@@ -1,11 +1,10 @@
-import { Index } from 'flexsearch';
+import { Index } from 'flexsearch-ts';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
 import data from './data';
 
 import type { Emoji } from './index';
-// import type { Emoji as EmojiMart, CustomEmoji } from 'emoji-mart';
 
-// @ts-ignore
 const index = new Index({
   tokenize: 'full',
   optimize: true,
@@ -37,29 +36,39 @@ export const addCustomToPool = (customEmojis: any[]) => {
 };
 
 // we can share an index by prefixing custom emojis with 'c' and native with 'n'
-const search = (str: string, { maxResults = 5, custom }: searchOptions = {}, custom_emojis?: any): Emoji[] => {
+const search = (
+  str: string, { maxResults = 5 }: searchOptions = {},
+  custom_emojis?: ImmutableList<ImmutableMap<string, string>>,
+): Emoji[] => {
   return index.search(str, maxResults)
-    .flatMap((id: string) => {
-      if (id[0] === 'c') {
-        const { shortcode, static_url } = custom_emojis.get((id as string).slice(1)).toJS();
+    .flatMap((id) => {
+      if (typeof id !== 'string') return;
 
-        return {
-          id: shortcode,
-          colons: ':' + shortcode + ':',
-          custom: true,
-          imageUrl: static_url,
-        };
+      if (id[0] === 'c' && custom_emojis) {
+        const index = Number(id.slice(1));
+        const custom = custom_emojis.get(index);
+
+        if (custom) {
+          return {
+            id: custom.get('shortcode', ''),
+            colons: ':' + custom.get('shortcode', '') + ':',
+            custom: true,
+            imageUrl: custom.get('static_url', ''),
+          };
+        }
       }
 
-      const { skins } = data.emojis[(id as string).slice(1)];
+      const skins = data.emojis[id.slice(1)]?.skins;
 
-      return {
-        id: (id as string).slice(1),
-        colons: ':' + id.slice(1) + ':',
-        unified: skins[0].unified,
-        native: skins[0].native,
-      };
-    });
+      if (skins) {
+        return {
+          id: id.slice(1),
+          colons: ':' + id.slice(1) + ':',
+          unified: skins[0].unified,
+          native: skins[0].native,
+        };
+      }
+    }).filter(Boolean) as Emoji[];
 };
 
 export default search;
diff --git a/app/soapbox/utils/features.ts b/app/soapbox/utils/features.ts
index e99d4c921..b435406aa 100644
--- a/app/soapbox/utils/features.ts
+++ b/app/soapbox/utils/features.ts
@@ -327,7 +327,11 @@ const getInstanceFeatures = (instance: Instance) => {
     /**
      * Ability to add non-standard reactions to a status.
      */
-    customEmojiReacts: v.software === PLEROMA && gte(v.version, '2.5.50'),
+    customEmojiReacts: any([
+      features.includes('pleroma_custom_emoji_reactions'),
+      features.includes('custom_emoji_reactions'),
+      v.software === PLEROMA && gte(v.version, '2.5.50'),
+    ]),
 
     /**
      * Legacy DMs timeline where messages are displayed chronologically without groupings.
diff --git a/package.json b/package.json
index f49c8f883..079f2173f 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,6 @@
     "@tanstack/react-query": "^4.0.10",
     "@testing-library/react": "^14.0.0",
     "@types/escape-html": "^1.0.1",
-    "@types/flexsearch": "^0.7.3",
     "@types/http-link-header": "^1.0.3",
     "@types/jest": "^29.0.0",
     "@types/leaflet": "^1.8.0",
@@ -118,7 +117,7 @@
     "emoji-mart": "^5.5.2",
     "escape-html": "^1.0.3",
     "exif-js": "^2.3.0",
-    "flexsearch": "^0.7.31",
+    "flexsearch-ts": "^0.7.31",
     "fork-ts-checker-webpack-plugin": "^8.0.0",
     "graphemesplit": "^2.4.4",
     "html-webpack-harddisk-plugin": "^2.0.0",
diff --git a/yarn.lock b/yarn.lock
index 65e08987f..12eb37b1c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4143,11 +4143,6 @@
   resolved "https://registry.yarnpkg.com/@types/filewriter/-/filewriter-0.0.29.tgz#a48795ecadf957f6c0d10e0c34af86c098fa5bee"
   integrity sha512-BsPXH/irW0ht0Ji6iw/jJaK8Lj3FJemon2gvEqHKpCdDCeemHa+rI3WBGq5z7cDMZgoLjY40oninGxqk+8NzNQ==
 
-"@types/flexsearch@^0.7.3":
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/@types/flexsearch/-/flexsearch-0.7.3.tgz#ee79b1618035c82284278e05652e91116765b634"
-  integrity sha512-HXwADeHEP4exXkCIwy2n1+i0f1ilP1ETQOH5KDOugjkTFZPntWo0Gr8stZOaebkxsdx+k0X/K6obU/+it07ocg==
-
 "@types/fs-extra@^9.0.1":
   version "9.0.13"
   resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-9.0.13.tgz#7594fbae04fe7f1918ce8b3d213f74ff44ac1f45"
@@ -9045,10 +9040,10 @@ flatted@^3.1.0:
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.2.2.tgz#64bfed5cb68fe3ca78b3eb214ad97b63bedce561"
   integrity sha512-JaTY/wtrcSyvXJl4IMFHPKyFur1sE9AUqc0QnhOaJ0CxHtAoIV8pYDzeEfAaNEtGkOfq4gr3LBFmdXW5mOQFnA==
 
-flexsearch@^0.7.31:
+flexsearch-ts@^0.7.31:
   version "0.7.31"
-  resolved "https://registry.yarnpkg.com/flexsearch/-/flexsearch-0.7.31.tgz#065d4110b95083110b9b6c762a71a77cc52e4702"
-  integrity sha512-XGozTsMPYkm+6b5QL3Z9wQcJjNYxp0CYn3U1gO7dwD6PAqU1SVWZxI9CCg3z+ml3YfqdPnrBehaBrnH2AGKbNA==
+  resolved "https://registry.yarnpkg.com/flexsearch-ts/-/flexsearch-ts-0.7.31.tgz#0353f51789ad8e7660c3df157534dcf2d346a20f"
+  integrity sha512-Z3geBbHiPw/JALe/thvxTd1LAgDcUNvQuHWGjhO4lG7gOR5IVVPsyS8tRt/qmme9HgXj3zdtHC4yJ3anGW1Xmw==
 
 flush-write-stream@^1.0.0:
   version "1.1.1"