1507584 - Videos not filling the full screen, when window is attached to one side of the screen

Status: RESOLVED DUPLICATE of bug 1482920

(Core :: Widget: Win32, defect)

Description

[Mathias Humpeler]

Attachment: Screenshot (2).png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

Steps to reproduce:

When I snap the firefox window to the left or right side of the desktop (so the window fills the half screen) and then switching a video, for example youtube, to fullscreen the video does not completly fills the screen. (see screenshot) When doing the same from a firefox window from the center of the display, or from a full filled window, fullscreenmode works fine.
DPI settings does not matter. Same effect with 100% or 150% and so on.
Windows 10 1809 x64 pro, Latest Update 2018-11
Latest NVidia drivers 416.94, GTX 1080 card
4K Screen


Actual results:

Fullscreen videos are croped on side, so the desktop shines thru and the taskbar is in front.


Expected results:

video should fill the complete screen in front.

Comment 1

[Mathias Humpeler]

Attachment: Screenshot (1).png

Comment 2

[Alice0775 White]

maybe duplication of Bug 1482920

Comment 3

[Mathias Humpeler]

Yes, looks like the same problem. Can be deleted...