Old thread but having the same issue here, many of my apps won't minimise when DF and WB are running, its weird, on some apps clicking minimise is like clicking restore. Others (e.g Thunderbird) just don't do anything when I click minimise.
Windows 10 Pro 1903 build 18362.295
DisplayFusion Pro 9.5
WindowBlinds 10.82 (057 - Windows 10 Edition) - 64 bit OS
Window titlebar blur features are enabled on this operating system
Wblind.dll 2019/06/25 20:37:48
Wblind64.dll 2019/06/25 20:37:49
Wbsrv.dll 2019/05/04 05:29:46
WB10Config.exe 2019/06/25 20:37:54
Wbload.dll 2019/05/08 21:13:37
Screen10.exe 2019/05/04 05:29:17
I have my ultrawide split into 3 monitors, no padding but 2 splits.
Guess it's back to no Windowblinds... again 