Missing alarm history?

I noticed this the other day, my alarm history is missing:

image

It’s not excluded in my config - any idea what’s going on? All my other’s are working just fine.

purge_interval: 1
purge_keep_days: 2
db_url: !secret recorder_db_url
exclude:
  domains:
    - automation
    - weblink
    - updater
    - calendar
    - camera
    - zwave
    - group
    - input_number
    - scene
    - zone

It was working a week or two ago (not sure exactly when). I have made zero config changes to the recorder.