If you see this again could you get a screenshot from the ecobee app or website as well?
What beestat is showing on the left is the thermostat main screen. This is the “calculated” temperature based on all your sensors, settings, etc.
The right side is the raw sensor reading with no adjustments. I suspect you may have a setting on that adjusts the temperature based on humidity or something. In that case the “calculated” temperature may be different than what your sensors read.
I am still seeing the same issue, have no idea what’s happening, I have the eco+ enabled for max savings, but I called the ecobee support, they advised me that this has no impact on my settings since I live in Canada, it’s only in the USA.
I am still seeing a difference between the 2 temperatures, the thermostat and the sensor, I’ve checked all the Ecobee settings, nothing unusual, only thing I have eco+ enabled (which has 0 effect), but could this be messing with the sensor’s raw data ?