The new update made the tabs white

So I have a problem with my eyes and I turn all the things black in windows, windows and frames etc.
It’s been working great in Avast browser until the recent update now the tabs show up as white which is very distracting and painful for my vision.
I tried setting it to the dark scheme or mode in the settings but it still is white.
Please make this possible to remove or else I will need to switch to another browser.

Hi Nothing_Special

please can you send screenshot and the diag info which can be found here: secure://settings/diagnosticInfo
Thanks!

At least you can get tabs. :-\