Hello,
With 10.84, Firefox skins but the text in the title bar is missing unless I hover the cursor over any of the Maximize/Minimize/Close controls.
Yes, I see the issue too. Yet, it better than not able to skin at all. And I think the issue is with Firefox not playing nice with Windowblinds.
Cursor disappears when doing a screen capture, but the "X"button is highlighted.
Not seeing that. I am using Windows Snipping Tools for this one

Also, it has been a long time since I've had a bug where the Start menu option has no background if one chooses the default OS button rather than the one provided by the skin. This was a problem before and it went away after an update, but it returned after a later update.
I am seeing that too, I am sure Stardock Support Team knew about it too..

Thank you,
Basj
Stardock Community Assistant.