Ghost in the dome

I’m not entirely sure how to explain this, but I’m starting to suspect my observatory is haunted.

After months of troubleshooting SM dome syncing, I’ve reached a very scientific conclusion: everything works perfectly… until I go to bed. Then it completely loses its mind.

For sanity check, the gear is: AM7 mount, Takahashi Epsilon 160ED, ATIK 1600 with Chroma filters, 50mm guide scope with a ZWO 290, running SM 2.8.20 Bundle v15.

Case in point - last night. I spent over three hours running a test with the dome and Tak setup:
GOTO? Perfect.
Guiding? Perfect.
Image acquisition? Perfect.
Dome syncing and slewing for three straight hours? Also perfect.

So naturally, feeling confident, I slewed over to M81 to finish out the night. First five frames looked great. I called it a win and went to bed around 11PM.

I woke up to 4.5 hours of beautiful… star trails....again

And this isn’t a one-off, it’s been the pattern for months. The moment I fall asleep, something - guiding, tracking, something - just quietly gives up on life.

At this point, I hate to say it, but I’m pretty sure there’s a ghost in the machine. And it only comes out after bedtime.

Can anyone offer an Oda Mae Brown advice here?