I still see the temp and humidity values. There are not direclty provided with this compoentent, but you can extract them from the attributes list in the climate.yourdevicename entity.
Before I had hardware version 1. I switched to the current model V3 (because of native Homekit).
I can see the same issue like you. Before Tado showed “Cooling” now it shows “heat”.
So it’s seems like the component need a modification for different tado smart ac hardware models.
Don’t know where to address this. @cgtobi could you help with this question? Seems like you work a lot with the netatmo climate component. Maybe your experience can help here too.