Weird intermittent behavior: MIDI track/Tempo Track

For about an hour, my MIDI track wouldn’t follow the tempo track, then all of a sudden it did. I had some freely played MIDI, warp-tabbed, MIDI track in musical mode, and the transport bar said “TEMPO - TRACK”. The metronome followed the tempo track, but the music plays back the same as recorded.

Then, all of a sudden, it behaved well.

I have no idea what caused this, but I thought I’d put it out there to see if anyone else has had similar problems, or at least to document it.

Thanks -