Window close/minimize buttons got a margin

[inxomnyaa]

Sanity checks (must complete)

• I have read and followed the installation instructions in the README
• I have not modified the userChrome.css file
• I have tested the latest release for my Firefox version, or commit on master/beta branch (beta is for Firefox Beta only)

Describe the bug
The latest version of FF changed the height of the title bar
Now the close button is not in the top right corner anymore

To Reproduce
Steps to reproduce the behavior:
Install?

Screenshots
Vanilla VS MaterialFox:

System info

• OS: Windows 10
• Firefox version: 99.0b2 (64-bit)

[inxomnyaa]

.titlebar-buttonbox-container{transform: translateY(-12px) !important;}

appears to work as a workaround