I'm also on r23589
and checked I have the updated ath11k 1837
WiFi firmware, yet I still experience the similar issue I described back in May, Dynalink DL-WRX36 Askey RT5010W IPQ8072A technical discussion - #1693 by otnert where:
To add, devices don't lose internet connectivity. I originally thought irqbalance
was at fault but realized it helped to add devices to the unreachable list. Rebooting fixes this, however it may take a few reboots to correct the issue.
Had a complete WiFi crash yesterday, at the time all I did was change to my guest SSID?
All OK now, I'll take a break from upgrading and see how it behaves.