OS: Windows 10 Home x64 | Groupy: 1.18 | Windowblinds: not installed.
I've just started trialling Groupy today and testing it under several different configurations. Behaviour-wise, it seems to be doing fine, but I'm encountering an issue with low-contrast text colors when Combined Tabs is on and Title Bars and Window Borders is enabled in Windows 10.
When this setting is off, most window title bars are white with black text. When it's on, the theme color may be too dark for black text. In my particular case, the theme color is dark gray.
Here's a series of examples for how cmd.exe behaves when using Groupy in this scenario...
Tabs Always Placed Above (not focused) (OK)

Tabs Always Placed Above (focused) (OK)

Tabs Combined if Possible (not focused) (OK)

Tabs Combined if Possible (focused) (ISSUE - black text on dark gray background!)

I saw on the pinned topic about Groupy 1.18 that some people were complaining about issues with tab colors/backgrounds, and that they were going to roll back to 1.17 or earlier. Since I haven't used a previous version, I was going to ask if I should do the same until this is reviewed.