Comment 1 for bug 1740958

I couldn't reproduce this.
I loaded 2 tracks with quantization enabled and tempo synced (but not locked), and moved around both tracks using the overview panel : beats stayed synced throughout.

There's though an issue with effects using quantization (Echo, Tremolo), which are getting out of sync when moving manually through a track.

Anyway, being able to move by a multiple of n beats (4 seems right, maybe 8) could be useful to stay rhythmically synced.