Thermostat not working correctly or wrong energy report?

Hello, can someone explain this to me?

I have these temperature settings which I have not changed for a very long time:

Comfort 20.5, Night 18.5, Away 17.0

How is it then possible that when I compare February this year with previous year, I see

Feb 2025: 169hrs

Feb 2026: 199hrs (+30h)

whereas in Feb 2026 avg outdoor temperature was higher (+2.1), indoor was lower (-1.5), and I spent 9 more days in away mode.

Is there a bug in the firmware somewhere or what? Reading the explanatory factors I would expect something opposite...