[Bug] privacy.resistFingerprinting causes the hover tab preview in content to be too small and offset

[bughit]

Abstract

privacy.resistFingerprinting causes the hover tab preview in content to be too small and offset.

It would be pretty silly for Mozilla to spoof various details for privileged extensions. That's meant for content. But that's probably what's happening. Is this something you can work around?

Steps to reproduce

1. Start Firefox with clean profile.
2. Install TST.
3. enable hover tab previews in content
4. set privacy.resistFingerprinting=true
5. open a bunch of tabs and hover on the last for the preview

Expected result

Actual result

Environment

• Platform (OS): win10 22h2
• Version of Firefox: 134.0
• Version (or revision) of Tree Style Tab: 4.1.1