Watch 6 Classic rebooted itself

[silverfang77]

I glanced at it to check the time and saw that the display was blank (I have AOD set to always on). I tapped and pressed its buttons, receiving no response. Just when I started to panic, the Samsung boot logo appeared and the watch booted up. It's never done this before. I read online that a watch face update can cause this. Has anyone experienced such behavior with their Watch 6 (Classic) before?

Thanks.