Solved: Grid Mode Won't Play Back (2.1)

I have 2 patterns in grid mode and somehow play button is now a blinking pause button and I can’t seem to stop it.
I saved song in Studio One and quit the app, relaunched, but same behavior exists.
Midi panic did not stop it from happening.
I saved as chord set, removed Scaler 2.1, added it back, loaded saved chord set, but still blinking pause button…
Right-click on play/pause toggles DAW sync. OK now.