Hi,
Apologies for not responding sooner.
Weirdly, that behavior has now stopped - it happened about 5 times within the first hour after updating to v4.1.1, but has not happened again in over two days.
So, I guess we should just forget about it........................ Unless it happens again!
But in answer to your questions: No auto start on boot, and not a laptop, it's Win10 Intel NUC.
Apologies for messing you about, & I'll just get my coat.