

Went out food shopping and came back home to his. I have absolutely no idea how it happened.
Is this fairly common for tempered glass panes? Any thoughts on how this could have happened? I know tempered glass can be very fragile especially if it barely touches a tile floor.
For context, my pc has great airflow and I've never had any issues with overheating. Nor was anything touching or rubbing up on the pane. I'm stumped.