diff --git a/app/javascript/mastodon/features/compose/components/language_dropdown.jsx b/app/javascript/mastodon/features/compose/components/language_dropdown.jsx
index 85057799be..c3bd908a4e 100644
--- a/app/javascript/mastodon/features/compose/components/language_dropdown.jsx
+++ b/app/javascript/mastodon/features/compose/components/language_dropdown.jsx
@@ -141,6 +141,7 @@ class LanguageDropdownMenu extends PureComponent {
     case 'Escape':
       onClose();
       break;
+    case ' ':
     case 'Enter':
       this.handleClick(e);
       break;
diff --git a/app/javascript/mastodon/features/compose/components/privacy_dropdown.jsx b/app/javascript/mastodon/features/compose/components/privacy_dropdown.jsx
index 82f9027388..071f0a6fab 100644
--- a/app/javascript/mastodon/features/compose/components/privacy_dropdown.jsx
+++ b/app/javascript/mastodon/features/compose/components/privacy_dropdown.jsx
@@ -5,16 +5,16 @@ import { injectIntl, defineMessages } from 'react-intl';
 
 import classNames from 'classnames';
 
-import { supportsPassiveEvents } from 'detect-passive-events';
 import Overlay from 'react-overlays/Overlay';
 
 import AlternateEmailIcon from '@/material-icons/400-24px/alternate_email.svg?react';
-import InfoIcon from '@/material-icons/400-24px/info.svg?react';
 import LockIcon from '@/material-icons/400-24px/lock.svg?react';
 import PublicIcon from '@/material-icons/400-24px/public.svg?react';
 import QuietTimeIcon from '@/material-icons/400-24px/quiet_time.svg?react';
 import { Icon }  from 'mastodon/components/icon';
 
+import { PrivacyDropdownMenu } from './privacy_dropdown_menu';
+
 const messages = defineMessages({
   public_short: { id: 'privacy.public.short', defaultMessage: 'Public' },
   public_long: { id: 'privacy.public.long', defaultMessage: 'Anyone on and off Mastodon' },
@@ -28,126 +28,6 @@ const messages = defineMessages({
   unlisted_extra: { id: 'privacy.unlisted.additional', defaultMessage: 'This behaves exactly like public, except the post will not appear in live feeds or hashtags, explore, or Mastodon search, even if you are opted-in account-wide.' },
 });
 
-const listenerOptions = supportsPassiveEvents ? { passive: true, capture: true } : true;
-
-class PrivacyDropdownMenu extends PureComponent {
-
-  static propTypes = {
-    style: PropTypes.object,
-    items: PropTypes.array.isRequired,
-    value: PropTypes.string.isRequired,
-    onClose: PropTypes.func.isRequired,
-    onChange: PropTypes.func.isRequired,
-  };
-
-  handleDocumentClick = e => {
-    if (this.node && !this.node.contains(e.target)) {
-      this.props.onClose();
-      e.stopPropagation();
-    }
-  };
-
-  handleKeyDown = e => {
-    const { items } = this.props;
-    const value = e.currentTarget.getAttribute('data-index');
-    const index = items.findIndex(item => {
-      return (item.value === value);
-    });
-    let element = null;
-
-    switch(e.key) {
-    case 'Escape':
-      this.props.onClose();
-      break;
-    case 'Enter':
-      this.handleClick(e);
-      break;
-    case 'ArrowDown':
-      element = this.node.childNodes[index + 1] || this.node.firstChild;
-      break;
-    case 'ArrowUp':
-      element = this.node.childNodes[index - 1] || this.node.lastChild;
-      break;
-    case 'Tab':
-      if (e.shiftKey) {
-        element = this.node.childNodes[index - 1] || this.node.lastChild;
-      } else {
-        element = this.node.childNodes[index + 1] || this.node.firstChild;
-      }
-      break;
-    case 'Home':
-      element = this.node.firstChild;
-      break;
-    case 'End':
-      element = this.node.lastChild;
-      break;
-    }
-
-    if (element) {
-      element.focus();
-      this.props.onChange(element.getAttribute('data-index'));
-      e.preventDefault();
-      e.stopPropagation();
-    }
-  };
-
-  handleClick = e => {
-    const value = e.currentTarget.getAttribute('data-index');
-
-    e.preventDefault();
-
-    this.props.onClose();
-    this.props.onChange(value);
-  };
-
-  componentDidMount () {
-    document.addEventListener('click', this.handleDocumentClick, { capture: true });
-    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
-    if (this.focusedItem) this.focusedItem.focus({ preventScroll: true });
-  }
-
-  componentWillUnmount () {
-    document.removeEventListener('click', this.handleDocumentClick, { capture: true });
-    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
-  }
-
-  setRef = c => {
-    this.node = c;
-  };
-
-  setFocusRef = c => {
-    this.focusedItem = c;
-  };
-
-  render () {
-    const { style, items, value } = this.props;
-
-    return (
-      <div style={{ ...style }} role='listbox' ref={this.setRef}>
-        {items.map(item => (
-          <div role='option' tabIndex={0} key={item.value} data-index={item.value} onKeyDown={this.handleKeyDown} onClick={this.handleClick} className={classNames('privacy-dropdown__option', { active: item.value === value })} aria-selected={item.value === value} ref={item.value === value ? this.setFocusRef : null}>
-            <div className='privacy-dropdown__option__icon'>
-              <Icon id={item.icon} icon={item.iconComponent} />
-            </div>
-
-            <div className='privacy-dropdown__option__content'>
-              <strong>{item.text}</strong>
-              {item.meta}
-            </div>
-
-            {item.extra && (
-              <div className='privacy-dropdown__option__additional' title={item.extra}>
-                <Icon id='info-circle' icon={InfoIcon} />
-              </div>
-            )}
-          </div>
-        ))}
-      </div>
-    );
-  }
-
-}
-
 class PrivacyDropdown extends PureComponent {
 
   static propTypes = {
diff --git a/app/javascript/mastodon/features/compose/components/privacy_dropdown_menu.jsx b/app/javascript/mastodon/features/compose/components/privacy_dropdown_menu.jsx
new file mode 100644
index 0000000000..1a5ff1fa80
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/privacy_dropdown_menu.jsx
@@ -0,0 +1,128 @@
+import PropTypes from 'prop-types';
+import { useCallback, useEffect, useRef, useState } from 'react';
+
+import classNames from 'classnames';
+
+import { supportsPassiveEvents } from 'detect-passive-events';
+
+import InfoIcon from '@/material-icons/400-24px/info.svg?react';
+import { Icon } from 'mastodon/components/icon';
+
+const listenerOptions = supportsPassiveEvents ? { passive: true, capture: true } : true;
+
+export const PrivacyDropdownMenu = ({ style, items, value, onClose, onChange }) => {
+  const nodeRef = useRef(null);
+  const focusedItemRef = useRef(null);
+  const [currentValue, setCurrentValue] = useState(value);
+
+  const handleDocumentClick = useCallback((e) => {
+    if (nodeRef.current && !nodeRef.current.contains(e.target)) {
+      onClose();
+      e.stopPropagation();
+    }
+  }, [nodeRef, onClose]);
+
+  const handleClick = useCallback((e) => {
+    const value = e.currentTarget.getAttribute('data-index');
+
+    e.preventDefault();
+
+    onClose();
+    onChange(value);
+  }, [onClose, onChange]);
+
+  const handleKeyDown = useCallback((e) => {
+    const value = e.currentTarget.getAttribute('data-index');
+    const index = items.findIndex(item => (item.value === value));
+
+    let element = null;
+
+    switch (e.key) {
+    case 'Escape':
+      onClose();
+      break;
+    case ' ':
+    case 'Enter':
+      handleClick(e);
+      break;
+    case 'ArrowDown':
+      element = nodeRef.current.childNodes[index + 1] || nodeRef.current.firstChild;
+      break;
+    case 'ArrowUp':
+      element = nodeRef.current.childNodes[index - 1] || nodeRef.current.lastChild;
+      break;
+    case 'Tab':
+      if (e.shiftKey) {
+        element = nodeRef.current.childNodes[index + 1] || nodeRef.current.firstChild;
+      } else {
+        element = nodeRef.current.childNodes[index - 1] || nodeRef.current.lastChild;
+      }
+      break;
+    case 'Home':
+      element = nodeRef.current.firstChild;
+      break;
+    case 'End':
+      element = nodeRef.current.lastChild;
+      break;
+    }
+
+    if (element) {
+      element.focus();
+      setCurrentValue(element.getAttribute('data-index'));
+      e.preventDefault();
+      e.stopPropagation();
+    }
+  }, [nodeRef, items, onClose, handleClick, setCurrentValue]);
+
+  useEffect(() => {
+    document.addEventListener('click', handleDocumentClick, { capture: true });
+    document.addEventListener('touchend', handleDocumentClick, listenerOptions);
+    focusedItemRef.current?.focus({ preventScroll: true });
+
+    return () => {
+      document.removeEventListener('click', handleDocumentClick, { capture: true });
+      document.removeEventListener('touchend', handleDocumentClick, listenerOptions);
+    };
+  }, [handleDocumentClick]);
+
+  return (
+    <ul style={{ ...style }} role='listbox' ref={nodeRef}>
+      {items.map(item => (
+        <li
+          role='option'
+          tabIndex={0}
+          key={item.value}
+          data-index={item.value}
+          onKeyDown={handleKeyDown}
+          onClick={handleClick}
+          className={classNames('privacy-dropdown__option', { active: item.value === currentValue })}
+          aria-selected={item.value === currentValue}
+          ref={item.value === currentValue ? focusedItemRef : null}
+        >
+          <div className='privacy-dropdown__option__icon'>
+            <Icon id={item.icon} icon={item.iconComponent} />
+          </div>
+
+          <div className='privacy-dropdown__option__content'>
+            <strong>{item.text}</strong>
+            {item.meta}
+          </div>
+
+          {item.extra && (
+            <div className='privacy-dropdown__option__additional' title={item.extra}>
+              <Icon id='info-circle' icon={InfoIcon} />
+            </div>
+          )}
+        </li>
+      ))}
+    </ul>
+  );
+};
+
+PrivacyDropdownMenu.propTypes = {
+  style: PropTypes.object,
+  items: PropTypes.array.isRequired,
+  value: PropTypes.string.isRequired,
+  onClose: PropTypes.func.isRequired,
+  onChange: PropTypes.func.isRequired,
+};