I tested it on Edge and Chrome (both updated), I copied the characters directly from the UNREAL editor to edit this. I notice that when this happens the white or black square in the menu deselects itself and I need to select the white square again and paint the area marked as “Undefined”, but this is happening all the time and it gets in the way a bit.
Update: I’m also unable to edit anymore, copy and paste from the editor to the website and this happens
