I’m certainly no expert in autofocus… though I do think I recall something about globular clusters being hard…
If the temperature isn’t going to change much, maybe you could ask it not to bother refocusing. But, usually, I would have expected a failed auto focus to cause the system to return to the starting point… which presumably, I mean, based on the evidence presented, was already in focus.
So, what the developers are going to want to know is what version of SGP are you using, and, if this is consistent behavior, then logs, and maybe you’ll even want to have the autofocus system do some logging. (I think that’s a thing you can ask SGP to do, but usually one doesn’t because it takes up lots of space, and isn’t usually interesting.)
So, now we wait to see if the developers will have anything to say. (They’re gonna want logs for certain, though. See: How to report issues or ask for help )
I’m envious of your set up. Wow, just wow.