Spent some time troubleshooting. When this issue does happen, the speed on the looper device displays 0.0, and when increase the speed one notch to 12.0, it runs it regular time.
What’s really weird is that after I start switching tracks (all DL#) and using new session mode on them, the problem goes away entirely for all tracks. I can’t seem to consistently recreate the problem, but I’ll keep messing with it.