Me too.. CAPsMAN on AX^3 and affected are AC and AX wifi devices.
Tons of logs - starting+stopping interface on CAPsMAN:
Oct 23 19:45:37 router wireless,debug 2G-AC-wifi: starting AP
Oct 23 19:45:37 router wireless,debug 2G-AC-wifi: stopping AP, disabling
Oct 23 19:45:37 router wireless,debug 2G-AX-wifi: starting AP
Oct 23 19:45:37 router wireless,debug 2G-AX-wifi: stopping AP, disabling