I have 2 issues with Editor:
When I create a view and add form to it containing editor, the firs appearance of the view is fine. When you close the view and reopen it (Test 1 button in test app) then the form will not appear correctly. When I replace editor with input - all works perfectly fine.
When I create the window with toolbar and form containing Editor and attach Popup to toolbar button and file upload to that popup (Test 2 button in test app) - it will work when the window will be open for the first time. Second time will cause popup not appear. When I replace editor with input - all works perfectly fine.
Here is the demo application (please accept self-signed certificate).