Just as an experiment, I checked the Celestron Firmware Manager, and there was an update (not currently listed in the Celestron firmware history).

Ver. 1.20.20265
Bld. Sep 22 2020

I applied the update, and did a quick check this evening. Autofocus has improved, which was nice, but I still got a crazy slew. I've attached a log file, clipped to the start of the "Slew to Target."

Based on my experience so far, using Starsense with "Sync" and not "Slew to Target" works best. The NexStar+ HC works, of course, but, owing to a disability, manual alignment is very challenging for me. As I wrote earlier, using "Sync" and then slewing again with KStars works well. I just have to be careful to avoid the "Slew to Target" option.