Can’t start in any measure any longer? Also, hopping cursor?

[nimbleswitch2]

I’ve been away a good few years, but I’ve kept my iRP up to date. I used to be able to press and start a tune in any measure. But it no longer will let me do this. It insists on starting at the top of the tune every time. Any Idea what I’m doing wrong?

Also, sometimes when playing back my old tunes, the cursor (i.e., the highlight of the measure being played) begins hopping seemingly randomly all around the chart. What’s with that?