Ouch. This is what happens when you only test it with a particular song
Found a bug where it would freeze when trying to go from the last to the first track and updated the .xrnx.
I’ve tried with all the 2.8 demosongs to see if I can break it. Creating groups, moving with alt-tab and arrows, focusing with the mouse (from track scopes, mixer, pattern editor and matrix), etc seems to work but it crashes when deleting groups.
I’ll try with the tool you’re using later and see if I can reproduce it. It’s this right?