Anyone else problems with clicking through areas that should not be transparent?

I already reported this problem in the problem reports forum, but obviously it happens only under rare conditions, so I wasn't able to figure out from the feedback there, when and why this happens. I hope it is OK to post it here again, where it probably gets more attention.

Dialog windows with special shapes (i.e. not rectangular) are not only transparent to define the shape (as they should), but also for several text areas in the dialog (as they clearly should not). It's hard to read transparent text, and it is annoying to click on the area below the window when clicking on the text.

Affected are (maybe amongst others):
- add track dialog: title bar, buttons, all text
- track color selection: buttons
- quad EQ flyout: title bar
- tool selection: note length drop down button
 


As a programmer, I know that this kind of windows are defined by so called regions. What I don't understand is why the regions should vary for different systems. I have the problem on two different computers, and the only thing common for both computers seems to be German OS and an AMD graphics card. (OS version, CPU, GPU, audio interfaces, driver versions, visual settings, Sonar version: everything different.)

So, my question is: Can anyone confirm this problem and whether it may be related to OS language or graphics card brand, or maybe other system specifications?