Actually there exists a bug/regression in the network manager.

If you tried the special opt-in-version of the network manager bugfix on last SW update and found out that it does not work for you, well: now it is rolled out so you have to take it.

Too bad since it causes my home WLAN not to connect properly, it will just be left blinking the connection retry...
Workaround is easy, just switch WLAN off and on agsin, but still... the previous nm worked better for me.