Already feeling bad about making this post, but, if someone else has this happen - hope you find this and we can figure it out together.
My OPNSense upgraded to 26.1.10 w/no issue, and I have CrowdSec installed and the Firewall Blocker feature enabled (this means there are two PF/Alias lists that CrowdSec manages updates for).
Instead of configuring my Firewall to use the "CrowdSec managed lists" aliases, I have made a new alias/list where I included the CrowdSec lists (IPv4 and IPv6), SpamHaus list, and a personally kept list as my combined blocklist. This is my blocklist for Inbound and Outbound traffic - works great!
Some time ago, I realized I could have "Uptime Kuma" check an alias/list via API to see how recently it has been updated and let me know if it starts aging too much. After a while I found that the 25 minute marker was good for watching this combined blocklist that I had created - more or less, it near always updates within 25 minutes.
For those wondering, it is a JSON check:
URL: https://opnsense.domain.tld/api/firewall/alias/getItem/<UUIDOfList>
Check: (($millis() - $toMillis(alias.last_updated)) / 60000)
Here is the issue:
Yesterday there was an alert that my combined blocklist hadn't updated, and it was getting into its 4th hour. After restarting the PF service, restarting the CrowdSec Firewall Blocker, and trying to modify my combined blocklist (basically open to edit and hit save) in the Alias list, my combined blocklist would never update. The CrowdSec managed lists were updating (even though you cannot see an edit date, you can tell their count had gone down as it didn't add up to the total sum of my combined blocklist), but my combined blocklist held its aging modify/update time and high count.
Once I restarted the OPNSense, things returned to normal and now the next day, continues to do so. No idea what happened there, but, I would recommend you watch your lists and make sure you track the last update date in case they get locked too. If it happens again (this has only happened once so far), I hope to be able to do more to figure out what the hang up is - would love ideas to check!