Randomly going to home menu

In the last week or so, while playing a game, my steam deck has randomly gone back to the home menu.

It flashes the spinning steam logo, then drops me into the home screen. I can go back to my game normally, though. I'd say it happens about once an hour or so.

If it matters, I have seen it happen with Star Ocean 2 and God Eater 2. Star Ocean, I was playing with default settings, and God Eater, I was playing with some changed settings that were recommended here.

What's going on here?