Warmth is broken?

As I worked at my workbench I began to freeze. I thought that it was sharply cold, even though it was summer. Checked the temperature, it is equal to 17`C.

Source data: nomad gear, nomad cowl, underwear and sneakers
Warmth: Oh, Lord… Arms -98; Head -93; Torso -106

But as soon as I undress

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Is this a bug in the experimental version, or is there something I don’t know about the game?

Are you on latest experimental, like the one from today? Are you hurt on those parts?

Build 10854, body parts break down
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see My torso and arms warmth drops to insane levels after loading a save