Video showing reproduction of the problem, using the steps from the description.
bug569112_reproduction.mp4 (video/mp4), 1.04 MB, created by Simeon Andreev CLA on 2020-11-24 10:53:53 EST
(hide)
 
Creator: Simeon Andreev CLA
Created: 2020-11-24 10:53:53 EST
Size: 1.04 MB

Attachment is not viewable in your browser because its MIME type (video/mp4) is not one that your browser is able to display.

Download the attachment.

Actions: View
Attachments on bug 569112: 284874