BUG in 2.1?: Changing IP mask in Interface Setup hangs/crashes pfSense

[Reiner030]

When I tried today some changes for our DMZ Setup I get stucked 2 times on our pfsense and once it also crashed (static IP addresses on WAN Interface). Because of testing DHCP6 setup I changed from /48 to /64 and then from /64 to /51… with painful problems :(

There was only 1 additonal CARP IP setup for Master/Slave failover.

Perhaps someone other has in some equal trouble ?
I didn't know if I can help here with debugging / logs to find out what happened - I saw nothing important in the logs in the last 50 lines each.

Bests