This is a weird one. But I’ve had them return to the facing I originally put them in right after they were done following (assuming I left the area so they would have time to reset). But I’ve also had them not do that and act like in your description. Same with server resets. This ‘usually’ gets them back. But not always.
In my experience if you’re looking for them to be in the right facing. They won’t be.
If you’re not… they will be… 