@YuriyB 

Hi,

Was it actually working before the update or did you not test Device Isolation before the update?

How are the client devices connected that can ping each other while isolated? (i.e. Ethernet, 2.4 GHz, 5 GHz)

  @woozle the only thing that can isolate devices is guest network.

but this thing actually does nothing:

isolated device can transfer data with all devices in my home, i added PC to isolated device and port-scanned every other device

  @YuriyB Have a same problem.with AX23. Floating bug: some devices still answering to ping from isolated device, some devices are not. But the WoL packet goes from isolated device anyway, even if pings are not.