Hello,
I have the beta built and running. I am running Debian 9 Stretch with KDE. I make uninstall from official ShowEQ 5 build and then installed from 6. I also did rm -rf /root/.showeq just for clean start. I have found a few issues.
1. Empty spaces for Top and Bottom Controls. I can't seem to make it smaller like normal. I can uncheck Top and Bottom and have no empty spaces at all. See this pic -> Removed
2. Options/Con Colors seems to be broken. I have dark theme with grey background on KDE so dark blue on dark grey background is hard to make out - I adjust the dark blue con to lighter blue so I can see it better. Once I did that, it doesn't take effect, it still stuck at default dark blue con.
3. showeq.xml is not being saved to /root/.showeq but to /usr/local/share/showeq. It probably doesn't make any difference but just noticed that.
So far it worked on GMM zone showing skittles. I have not played yet but once I did and if I run into more issues, I'll post ...
Thank you!