OK, so I’ve found the ‘problem’. Under Integrations, when you press Options at the Tado integration, a window will pop-up saying:
Adjust Tado options.
Fallback mode will switch to Smart Schedule at next schedule switch after manually adjusting a zone.
Enable fallback mode.
This was enabled… When disabled, Tado is working normally again. I don’t know if it was enabled before but for sure it was working before, so very strange 