Yes, we’re also seeing this behaviour. It was also reported by other users already e.g. here Smart Lock (4th generation) Firmware Beta 4.2.x - #32 by simone_piccinocchi
Yes, there has been no change on Nuki side.
The only thing you can do for the time beeing is to report the issue to Apple via this site. Please do so. This has proven to be valuable in the past already several times.
We’re looking into it as well and will update you once we know more.
P.S.: I changed the title of topic to reflect better what we’re talking about here.