[Samba] Problem after update version 4.15.0

[Gerd Peter]

HI,
If I can help to find the Problem and the reason ...
We have the same Problem:
fresh new debian bullseye Installation
L.P.H. van Belle Repositories bullseye-samba415 main
DNS is bind; every DNS test is working well, on the DC and on the
Windows Systems; signed chrony Timeserver;

Windows Server 20219 and Windows 10 same result:
No Problem to join the Domain - after the first reboot - 
authenticate tells then that the username or password is wrong

C:\Windows\system32>nltest /dsgetdc:exampledomain.net - give the right
answer.

If I can make some further tests ...
regards,
gerd peter