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Turn signal and emergency flasher issue...

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Had an odd occurrence over the weekend that I've never seen before. Had just updated to 2021.36.5.1, so maybe related. Was down in philly and stopped briefly with emergency flashers. Drove away, and as far as I recall disabled flashers. Started making left turns to circle a block and couldn't get the turn signal to enable. It was odd, as I didn't see any indication from the dash that emergency or turns were working and no audible turn signal repeat clicks.
Was looking for parking, so figured I'd try a reset after stopping and was following a van with a dark wheel cover. Noticed that the emergency flashers were still running from reflection of the front of the car! Stared dumbly at the dash which showed no indication emergencies where on...
So punched the emergency button again and things returned to normal. Now turn signals worked again. No idea how to reproduce it, but never noticed it before.