Thermostat changes to 72 even though behavior and schedule set to 75

One of my thermostats keepings changing to COOL 72. I have set the behavior to 75 and schedule to 75. I then manually set it to 76 degrees and HOLDING. The next morning it will be set to 72 degrees again! It has a mind of its own. Anyone seen this behavior before?

You likely have another schedule running.