1588316 - White outline on secondary display while fullscreen on Windows

Status: RESOLVED DUPLICATE of bug 1609129

(Core :: Window Management, defect, P3)

Description

[dakshjain48]

Attachment: Image is a proof of the bug.

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

Steps to reproduce:

I use a 24 full HD monitor as my primary screen on the right and a 15.6-inch full HD laptop as a secondary screen on the left. The 24-inch monitor is at a scale of 100% and the laptop is at a scale of 125%. When I shift a firefox window from the monitor to the laptop and maximize it, thin white borders around the firefox appear.
This does not happen with other browsers.

Actual results:

The white borders appear in firefox on the secondary screen when firefox is maximized.

Expected results:

The borders should not appear.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug.
:enndeakin, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 2

[Timea Zsoldos [:zstimi/tzsoldos], Desktop QA]

Can not reproduce this issue, on Firefox 71.0a1 (2019.10.12) and it does not reproducible on Fx 85.0b9 either.