2023.4 broke Insteon thermostat integration

HA running on the standard RPi 4 set up. Upgrading to 2023.4 ( versions .0, 1 and 2) causes the Insteon thermostat cards to display a fixed 34 deg F temperature and weird set points. This has been replicated on a brand new fresh install, and is NOT fixed by restoring an earlier back up. Only fix was to create a new fresh install, - and then repeating the upgrade caused the same consequence.

Any help appreciated - even if it is to not upgrade for a while.

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Same thing happening in mine. Following this thread for hopeful resolution.

EDIT - I just submitted an issue here: Thermostats no longer working in 2023.4.x · Issue #330 · pyinsteon/pyinsteon · GitHub