I'm on 1.4.4. You're on 21.29.1. Quite the disparity...
Unfortunately we don't have Release Notes for the Wall Connector updates, but my Gen3 went from 1.4.4 to 21.18.1 and then to 21.29.1.
It always updated on it's own, but the only (user facing) differences I could notice between all these versions, were that we lost the "Ground Resistance" measurement, we gained the "Access Control" setting, which let's you select if any car can charge on that Wall Connector or just Teslas, and gained the "Power Sharing" feature.
I suspect there must be some thermal throttling and new heat sensor readings for the Revision "F" units that had this issue as well.