Initial setup Login as an Admin Navigate to Site admin -> Plugins -> Text editor -> TinyMCE editor -> Tiny Premium and enter in a valid API key (You can get a free trial at https://www.tiny.cloud/ ). Make sure that the Tiny Premium  plugin is enabled. A. Copy Paste Make sure TinyMCE Premium is activated. Open an editor and make sure the the editor covers the center for the browser. (You may need to scroll or resize the editor form) Copy a chunk of text from a Word document. Verify that the `Paste Formatting Options` dialogue appears and the both buttons `Remove formatting` and `Keep formatting` are clickable without any problems. B. New feature ui_mode: split Create a course Add a `page` resource Fill in `Hello, world` text to the Description and Content editor Save and Return to Course Edit the `page` resource. At the Description editor, click Insert menu Verify that the menu displays properly and is not covered by the navbar. Make the browser window width to 1280px Click View > Source Code Verify that the source code dialogue displays correctly and is not covered by the left and right navigation drawer. Close the Source Code dialogue Click View > Full Screen Verify that the editor displays correctly and is not covered by the left and right navigation drawer. Close the Full Screen dialogue. Click Edit > Find & Replace Verify that the Find & Replace dialogue displays correctly. Verify that the Find & Replace dialogue can be dragged without any problems.   Please test the above testings with Chrome, Firefox and Safari browsers.