opnsense 22.7.6 cannot be upgraded to 22.7.8

[teosoft]

Opnsense 22.7.6 cannot be upgraded to 22.7.8

The upgrade proceeds as always, but the system version stays at 22.7.6.

There's additional upgrade available after that, with the message:
   
"There are 12 updates available, total download size is 0B."

Again the additional upgrade proceeds as usual, only to be offered again.

I rebooted a few times but it didn't help, either.