I installed 1.3.6 last week and did several prints with no problems. After installing 1.3.7 I noticed one print that seemed to cancel mid print for no reason and everything just stopped in place. Octoprint web interface said it was paused but I couldn't get it to unpause. I reloaded octoprint and restarted from scratch. I then updated to 1.3.8 and installed the PSU plugin. I've had three different prints stop for no reason.
Last night I started a print and it got almost completely through but near the end it stopped, went home, and retracted all the filament out of the machine. There was nothing in the logs to show that it had finished, paused, or canceled. The logs showed a server heartbeat before and after the print stopped.
I rebooted octopi and tried different prints.
This is on 1.3.8, on a CR10S with Marlin TH3D U1.R1.6.