Covered by the newly created Behat test. Manual testing is below Log in as admin. Change the editor to the New Tiny editor. Click on the User profile menu -> Profile. Click on the Edit profile link. Click on the Multimedia button in the Description. Switch to the Video tab. Verify that the dialogue has 2 buttons: Insert media and Cancel. Click the Browse repositories... button. Upload a video. Click the Insert media button. Verify that the video was inserted into the Tiny editor's content. Click on the inserted video element. Click on the Multimedia button in the Description. Verify that the Video source URL is filled in. Verify that the dialogue has 2 buttons: Update media and Cancel. Expand Display options and Advanced settings sections. Set the values for the following fields: Enter title: Test title Show controls: Checked Play automatically: Checked Muted: Checked Loop: Checked Click the Update media button. Verify that there is no new video element was inserted into the Tiny editor's content. Click on the video element. Click on the Multimedia button in the Description. Verify that all the values match in step 17.