Problem with wifi on Samsung after Android 12 upgrade

I'm using the same KLWP on three different Samsung devices.

After the upgrade to Android 12 of my S20+, KLWP no longer recognizes the wifi state. It's always "enabled" with speed 0 even when wifi is actually connected and working.

On the other Samsungs, it works fine.

I read something about the battery saving mode, but in this case is not relevant, the problem persists in any battery mode.

It looks to be related to the upgrade since before it was working fine.

Any suggestion / workaround?