Not sure if this is the right place for this?
Log shows that when trying to set thermostat fan mode from Thermostat tile, the call is inserting a preceding 'space' character in the call:
Note the leading space ' on'
This is causing issues with ecobee setFanMode integration. I am using Ecobee-Suite by sandood, and had to edit the driver to look for ' on', to get the Thermostat tile to successfully set my ecobee fan.