Resizing windows is broken when "privacy.resistfingerprinting" enabled and set to 1920x1080

[doctorsangria]

Captchas

• I have read the instructions.
• 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?

Fairly certain this bug is specific to the newest update, since I've been using letterboxing since I first downloaded Zen with no issues.

When you enable "privacy.resistFingerprinting.letterboxing" in about:config, and set "privacy.resistFingerprinting.letterboxing.dimensions" to 1920x1080, resizing windows beyond a certain point will overlay the contents of the window over the side tabs, pretty much breaking the entire browser UI.

NVIDIA_Overlay_9cw9pPYoL9.mp4

Version

1.11b

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Privacy

Relevant log output if applicable