diff --git a/src/discussions/common/ActionsDropdown.jsx b/src/discussions/common/ActionsDropdown.jsx
index 3d65d45b..12c318cc 100644
--- a/src/discussions/common/ActionsDropdown.jsx
+++ b/src/discussions/common/ActionsDropdown.jsx
@@ -1,4 +1,4 @@
-import React, { useContext, useState } from 'react';
+import React, { useCallback, useRef, useState } from 'react';
 import PropTypes from 'prop-types';
 
 import { useSelector } from 'react-redux';
@@ -16,7 +16,6 @@ import messages from '../messages';
 import { commentShape } from '../post-comments/comments/comment/proptypes';
 import { postShape } from '../posts/post/proptypes';
 import { inBlackoutDateRange, useActions } from '../utils';
-import { DiscussionContext } from './context';
 
 function ActionsDropdown({
   intl,
@@ -26,41 +25,54 @@ function ActionsDropdown({
   iconSize,
   dropDownIconSize,
 }) {
+  const buttonRef = useRef();
   const [isOpen, open, close] = useToggle(false);
   const [target, setTarget] = useState(null);
   const actions = useActions(commentOrPost);
-  const { enableInContextSidebar } = useContext(DiscussionContext);
-  const handleActions = (action) => {
+
+  const handleActions = useCallback((action) => {
     const actionFunction = actionHandlers[action];
     if (actionFunction) {
       actionFunction();
     } else {
       logError(`Unknown or unimplemented action ${action}`);
     }
-  };
+  }, [actionHandlers]);
+
   const blackoutDateRange = useSelector(selectBlackoutDate);
   // Find and remove edit action if in blackout date range.
   if (inBlackoutDateRange(blackoutDateRange)) {
     actions.splice(actions.findIndex(action => action.id === 'edit'), 1);
   }
+
+  const onClickButton = useCallback(() => {
+    setTarget(buttonRef.current);
+    open();
+  }, [open]);
+
+  const onCloseModal = useCallback(() => {
+    close();
+    setTarget(null);
+  }, [close]);
+
   return (
     <>
       <IconButton
-        onClick={open}
+        onClick={onClickButton}
         alt={intl.formatMessage(messages.actionsAlt)}
         src={MoreHoriz}
         iconAs={Icon}
         disabled={disabled}
         size={iconSize}
-        ref={setTarget}
+        ref={buttonRef}
         iconClassNames={dropDownIconSize ? 'dropdown-icon-dimentions' : ''}
       />
       <div className="actions-dropdown">
         <ModalPopup
-          onClose={close}
+          onClose={onCloseModal}
           positionRef={target}
           isOpen={isOpen}
-          placement={enableInContextSidebar ? 'left' : 'auto-start'}
+          placement="bottom-end"
         >
           <div
             className="bg-white p-1 shadow d-flex flex-column"
diff --git a/src/discussions/post-comments/comments/comment/Comment.jsx b/src/discussions/post-comments/comments/comment/Comment.jsx
index 4bcb71bd..23c96899 100644
--- a/src/discussions/post-comments/comments/comment/Comment.jsx
+++ b/src/discussions/post-comments/comments/comment/Comment.jsx
@@ -1,4 +1,7 @@
-import React, { useContext, useEffect, useState } from 'react';
+import React, {
+  useCallback,
+  useContext, useEffect, useMemo, useState,
+} from 'react';
 import PropTypes from 'prop-types';
 
 import classNames from 'classnames';
@@ -43,28 +46,28 @@ function Comment({
   const hasMorePages = useSelector(selectCommentHasMorePages(comment.id));
   const currentPage = useSelector(selectCommentCurrentPage(comment.id));
   const userCanAddThreadInBlackoutDate = useUserCanAddThreadInBlackoutDate();
-  const {
-    courseId,
-  } = useContext(DiscussionContext);
+  const { courseId } = useContext(DiscussionContext);
+
   useEffect(() => {
     // If the comment has a parent comment, it won't have any children, so don't fetch them.
     if (hasChildren && !currentPage && showFullThread) {
       dispatch(fetchCommentResponses(comment.id, { page: 1 }));
     }
   }, [comment.id]);
+
   const actions = useActions({
     ...comment,
     postType,
   });
   const endorseIcons = actions.find(({ action }) => action === EndorsementStatus.ENDORSED);
 
-  const handleAbusedFlag = () => {
+  const handleAbusedFlag = useCallback(() => {
     if (comment.abuseFlagged) {
       dispatch(editComment(comment.id, { flagged: !comment.abuseFlagged }));
     } else {
       showReportConfirmation();
     }
-  };
+  }, [comment.abuseFlagged, comment.id, dispatch, showReportConfirmation]);
 
   const handleDeleteConfirmation = () => {
     dispatch(removeComment(comment.id));
@@ -76,7 +79,7 @@ function Comment({
     hideReportConfirmation();
   };
 
-  const actionHandlers = {
+  const actionHandlers = useMemo(() => ({
     [ContentActions.EDIT_CONTENT]: () => setEditing(true),
     [ContentActions.ENDORSE]: async () => {
       await dispatch(editComment(comment.id, { endorsed: !comment.endorsed }, ContentActions.ENDORSE));
@@ -84,7 +87,7 @@ function Comment({
     },
     [ContentActions.DELETE]: showDeleteConfirmation,
     [ContentActions.REPORT]: () => handleAbusedFlag(),
-  };
+  }), [showDeleteConfirmation, dispatch, comment.id, comment.endorsed, comment.threadId, courseId, handleAbusedFlag]);
 
   const handleLoadMoreComments = () => (
     dispatch(fetchCommentResponses(comment.id, { page: currentPage + 1 }))
diff --git a/src/discussions/post-comments/comments/comment/Reply.jsx b/src/discussions/post-comments/comments/comment/Reply.jsx
index 412d4f1a..b2539b2e 100644
--- a/src/discussions/post-comments/comments/comment/Reply.jsx
+++ b/src/discussions/post-comments/comments/comment/Reply.jsx
@@ -1,4 +1,4 @@
-import React, { useState } from 'react';
+import React, { useCallback, useMemo, useState } from 'react';
 import PropTypes from 'prop-types';
 
 import { useDispatch, useSelector } from 'react-redux';
@@ -31,13 +31,13 @@ function Reply({
   const [isDeleting, showDeleteConfirmation, hideDeleteConfirmation] = useToggle(false);
   const [isReporting, showReportConfirmation, hideReportConfirmation] = useToggle(false);
 
-  const handleAbusedFlag = () => {
+  const handleAbusedFlag = useCallback(() => {
     if (reply.abuseFlagged) {
       dispatch(editComment(reply.id, { flagged: !reply.abuseFlagged }));
     } else {
       showReportConfirmation();
     }
-  };
+  }, [dispatch, reply.abuseFlagged, reply.id, showReportConfirmation]);
 
   const handleDeleteConfirmation = () => {
     dispatch(removeComment(reply.id));
@@ -49,7 +49,7 @@ function Reply({
     hideReportConfirmation();
   };
 
-  const actionHandlers = {
+  const actionHandlers = useMemo(() => ({
     [ContentActions.EDIT_CONTENT]: () => setEditing(true),
     [ContentActions.ENDORSE]: () => dispatch(editComment(
       reply.id,
@@ -58,7 +58,8 @@ function Reply({
     )),
     [ContentActions.DELETE]: showDeleteConfirmation,
     [ContentActions.REPORT]: () => handleAbusedFlag(),
-  };
+  }), [dispatch, handleAbusedFlag, reply.endorsed, reply.id, showDeleteConfirmation]);
+
   const authorAvatars = useSelector(selectAuthorAvatars(reply.author));
   const colorClass = AvatarOutlineAndLabelColors[reply.authorLabel];
   const hasAnyAlert = useAlertBannerVisible(reply);
diff --git a/src/discussions/posts/post/Post.jsx b/src/discussions/posts/post/Post.jsx
index 1ecbb94d..0bfad8c5 100644
--- a/src/discussions/posts/post/Post.jsx
+++ b/src/discussions/posts/post/Post.jsx
@@ -1,4 +1,4 @@
-import React, { useContext } from 'react';
+import React, { useCallback, useContext, useMemo } from 'react';
 import PropTypes from 'prop-types';
 
 import classNames from 'classnames';
@@ -42,13 +42,14 @@ function Post({
   const [isDeleting, showDeleteConfirmation, hideDeleteConfirmation] = useToggle(false);
   const [isReporting, showReportConfirmation, hideReportConfirmation] = useToggle(false);
   const [isClosing, showClosePostModal, hideClosePostModal] = useToggle(false);
-  const handleAbusedFlag = () => {
+
+  const handleAbusedFlag = useCallback(() => {
     if (post.abuseFlagged) {
       dispatch(updateExistingThread(post.id, { flagged: !post.abuseFlagged }));
     } else {
       showReportConfirmation();
     }
-  };
+  }, [dispatch, post.abuseFlagged, post.id, showReportConfirmation]);
 
   const handleDeleteConfirmation = async () => {
     await dispatch(removeThread(post.id));
@@ -64,7 +65,7 @@ function Post({
     hideReportConfirmation();
   };
 
-  const actionHandlers = {
+  const actionHandlers = useMemo(() => ({
     [ContentActions.EDIT_CONTENT]: () => history.push({
       ...location,
       pathname: `${location.pathname}/edit`,
@@ -82,7 +83,19 @@ function Post({
     [ContentActions.COPY_LINK]: () => { navigator.clipboard.writeText(`${window.location.origin}/${courseId}/posts/${post.id}`); },
     [ContentActions.PIN]: () => dispatch(updateExistingThread(post.id, { pinned: !post.pinned })),
     [ContentActions.REPORT]: () => handleAbusedFlag(),
-  };
+  }), [
+    showDeleteConfirmation,
+    history,
+    location,
+    post.closed,
+    post.id,
+    post.pinned,
+    reasonCodesEnabled,
+    dispatch,
+    showClosePostModal,
+    courseId,
+    handleAbusedFlag,
+  ]);
 
   const getTopicCategoryName = topicData => (
     topicData.usageKey ? getTopicSubsection(topicData.usageKey)?.displayName : topicData.categoryId