BUG: Ubound DNS crashes when assign DHCP client to static IP

[MrCCL]

OPNsense 19.1.4-amd64
FreeBSD 11.2-RELEASE-p9-HBSD
OpenSSL 1.0.2r 26 Feb 2019

it seems when you assign a DHCP client to a static IP and save,  Unbound DNS crashes and have to be started.
See attachments.

By the way, in general I rather often have to reload Unbound DNS because new DHCP assigned IP's are not always registered in Unbound from DHCP. I do admit I add/remove clients often and change hostnames etc (KVM test setup). In it might have been better in the few last updates.
I don't have any specific details yet, but just for common info that the sync between DHCP and Unbound doesn't seem to be rock solid.