Building Probelm with heat (Adobe Stone Onion House)

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so my tribe and I build this stone house.
when we are inside we see that it is to hot.
we loose health.
we dont want to loose health.
we build Adobe foundation, walls and roofs around our house.
house evolved from 2x2 to 4x4. dayum son.
in the outer ring of the house, temeratur is fine.
once you go inside the onion hous (in the old stone one), heat comes back.
our stone house is now fully surounded with adobe.
still a damn saune in the middle.

Question: is this a bug uór intended

PS: we wanted the middle to be stone since stone walls,foundations and roofs got mor health (10000) ... adobe has 6500