Apply the patch and follow the testing instructions below: Prerequisites Boost theme TinyMCE editor as a default editor by navigate to Preferences >> Editor Preferences. Edit Profile (without drawer navigation) Log in as admin. Edit Profile. Verify. In the description, you will see TinyMCE as the editor. Click "Edit" on the TinyMCE menu. Verify. The Edit menu will display normally. Verify. The menu will always be in the same position while scrolling the page up and down. Insert an image into the editor. Verify. The image is displayed correctly. Click the image. Verify. There will be a popup dialogue with four icons. Click an icon on the right position to change the image properties. Verify. There will be a popup window, and you will not see the image popup dialogue with four icons. Edit Course (with drawer navigation) Log in as admin. Edit Course. Verify. You see two menus on the left (course index) and the right (Block drawer) Scroll down to Course Summary. Verify. You will see TinyMCE as the editor. Click "Edit" on the TinyMCE menu. Verify. The Edit menu will display normally. Verify. The menu will always be in the same position while scrolling the page up and down. Open the Course Index drawer, and scroll up & down the drawer. Verify. The behaviour is expected, with no differences between before and after you applied the patch. Open the Block Drawer drawer, and scroll up & down the drawer. Verify. The behaviour is expected, with no differences between before and after you applied the patch.