My rear derailleur hanger went yesterday on the commute home. Luckily it was as I started off again after a turn. Still managed to take out 2 spokes itself and possibly the derailleur itself. Luckily, I had spares back to my knackered old Shimano for now.
Luckily derailleur hangers are standardized across the industry and so it’s easy to pick up a replacement from any bike shop NO WAIT