I did try the rebuild an rescan, but it still gives the same results. The computer in questions is Windows 11, and it also recently downloaded and installed some upgrades.
As a test I copied the wallet to an older Windows 10 PC I have with Bitcoin Core 25.0, and Armory works as it should from there. It looks like the issue is perhaps Windows 11 related. I'm pressed for time today, but I will plan on sending logs to you tomorrow from the Windows 11 PC.
There might be something that causes this issue if it is just your OS it might be a compatibility issue.
Can you try to change the compatibility mode to Windows 10 or 7?
To do that right-click the Armory shortcut --> properties --> compatibility then enable "Run this program in compatibility mode" and choose Windows 10 or below.
Also, do this in Bitcoin core then reboot the PC.
If it didn't work try disabling the firewall and exclude Armory and Bitcoin core from your Anti-Virus.
Apologies for my slow reply: work's been crazy.
I tried all of the above, and none of it worked. Changing to compatibility mode made things even more wonky.