Well, WindowBlinds is not compartible with Pale Moon.
Now, I have got 2 choices: add Pale Moon to the exclusion list of WB , or disabling the browser HW acceleration.
I see that everything works fine with Firefox , that means, of course, that Stardock has made some special arrangements in WB skinning engine to make it compatible with Firefox.
I know Pale Moon is still a lot less popular than Firefox (though I prefer Pale Moon, for many reasons) , but his users number is quickly increasing, especially in the last year..
Could it be done something to make WB Pale Moon compatible as well?