Hello @Triplus. Any news on the glass addon side? i've been waiting for a bump in version and now i'm on kubunrtu 19.04 and freecad-daily from the ppa but it seems that the problem with the black background persists.

- fcGlass.png (202.2 KiB) Viewed 647 times
Also , i don't know if it's related or if it can help in any way , there are 2 visual glitches that occur with fc-daily and not with the app image one. When on dark theme , the scroll bar of the workbench selector has the same black appearance as the glass addon. Also notice the vertical line in the viewport. It happens when one ridimensions the combo view. This screenshot is taken on a laptop with a Vega8 graphics card. I still need to set up my desktop (Nvidia) and try to test there also.
Thank you and all the best.
OS: Ubuntu 19.04 (KDE/plasma)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Python version: 3.7.3
Qt version: 5.12.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Italian/Italy (it_IT)