This was certainly another Alby Hub related scare (really part of the same one).
Before the computer hosting my Alby Hub crashed, I transferred some bitcoin to it for the sake of opening a channel to SN. I was recently offered ownership in multiple territories (#826658 and #833775) and needed a channel large enough to support my yearly rent payments.
After getting that node migrated, I was concerned that the on-chain transfer wasn't showing up. I checked the mempool and everything looked right (as far as I could tell), so I contacted Alby support.
The fix was actually fairly straightforward. I just had to attempt to open a channel using the wallet address that the missing bitcoin was in. In an instant, the channel was being generated and my balance was displaying correctly.
Hopefully, that tale will help anyone else who runs into this problem.