TQGroupBox broken with latest GIT sources?

Dear all, before I open a bug report, I want to check if any of you can see the same problem. I noticed yesterday on my system that the frame around any TQGroupBox is no longer displayed. The problem seems to affect all styles: if I open a .ui file in KUIViewer, the frame is missing whatever style I choose. I did a rebuild last night and checked again this morning, but the problem is still there. I have a test VM with an environment from May 20 (the sources could be from May 18 or 19) and the TQGroupBox frame is displayed correctly. So the bug has been introduced quite recently. If any of you can confirm this, I will open a bug report and add it to the v14.0.0 bug list, since it affects the UI system wide. Cheers Michele