Found on 'cswiki wmf.39`(the issue is present in betalabs).
Steps to Reproduce:
- Go to SE article (on desktop), so the blue pulsing dot on 'Edit' menu will be displayed.
- Click on 'Edit source' - the guidance panel will display a link "Switch to the visual editor".
- Click on the link - the editor is switched to VE.
The pulsing blue dot will be partially obscured by the VE toolbar.
(click to animate the gif)