1832665 - Switching youtube video to full screen shows borders around the video

Status: RESOLVED DUPLICATE of bug 1830721

(Core :: Widget: Win32, defect)

Description

[Hans]

Attachment: fullscreen-prb.png

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0

Steps to reproduce:

Open https://www.youtube.com/watch?v=YT7E9jubQvU
Click bottom left icon in the video frame (play fullscreen) to play video in full screen

Actual results:

The video window is resized to not full screen but some pixel smaller so desktop window (or other windows) are visible there.

When I have another program open, and switch with Task Manager to it, then back to Firefox, the Firefox window resizes to full screen.

See attached file which is a Printscreen copy, the (mostly withe) border around the video.

Expected results:

The video window should be resized to full screen right after clicking on the icon.

This worked until v 113.0 so it must be introduced here.

Comment 1

[Hans]

Correction: The mostly white "frame" around the video is not the desktop.

Comment 2

[Hans]

The mostly white "frame" around the video is not the desktop, but apparently the content of the full-screen firefox window.

Comment 3

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

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Win32' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.