Hello
since the update 10.83 I have observed a number of bugs connected to faulty painting of theme elements. The bugs occur in my own theme as well as default themes that come bundled with WB.
1. backgrounds of buttons that select different view styles in explorer fail to paint.

image1
2. background of buttons of apps like irfanview are black and another, more annoying issue is that when you go to print dialogue window most of its elements fail to draw! They become visible only after I move mouse pointer over them. Image 2.1 and 2.2 illustrate the bug

image2.1

image2.2
3. in "save as" dialogues/windows backgrounds of buttons don't get drawn. The example in the image is from Irfanview but the same thing happens in e.g. Photoshop.

image3
Lastly, this versionof WB disables skinning of Firefox but in one fell swoop you disable skinning of other applications that are developed off an old branch of FF (prior to the big UI changes). An example is Pale moon and email client Interlink Email @ News. These applications use the old FF engine but get security and stability updates so that users can enjoy the familiar look and have the interface skinnable. Your Global disabling of themeing of these apps goes against the idea of themeing.
Btw, my update to WB .83 was preceded by uninstall of the previous version, restart, purge, and then install of .83. Ive done that 2 times already.
My sys info:
Windows 10 Home (18362.19h1_release.190318-1202)
WindowBlinds 10.83 (058 - Windows 10 Edition) - 64 bit OS
Window titlebar blur features are enabled on this operating system
Wblind.dll 2019/11/04 14:56:31
Wblind64.dll 2019/11/04 14:56:51
Wbsrv.dll 2019/05/04 05:29:46
WB10Config.exe 2019/10/15 17:19:54
Wbload.dll 2019/05/08 21:13:37
Screen10.exe 2019/05/04 05:29:17