(Fixed - Client side) Minor visual clipping when scrolling with a hidden taskbar

[CJ-518]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

When scrolling, sometimes a 1 or 2 pixel tall line gets stuck to the bottom edge of the browser, scrolling up and down again gets rid of it, the only site I've seen it happen consistently in is YouTube, probably the easiest to notice case because of the variety of colors on display when browsing the homepage.

Expected behavior

Scrolling

Actual behavior

Scrolling works just fine, but 1 or 2 pixels of whatever you scrolled past gets stuck to the bottom edge of the browser

Steps to reproduce

1. Go to Taskbar Settings on Windows
2. Click on Taskbar Behaviour
3. Hide Taskbar automatically when the cursor isn't hovering over it
4. Open YouTube
5. Scroll through the homepage

(Some of the Windows Settings in the steps might be called something else, my system is in Spanish)

Version

1.17.6b (Firefox 144.0.2) (64-bit)

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Other

Relevant log output if applicable