Having the same issue. I have the "1 Torendi Tower Penthouse" home with a thermoset on the first floor, set to warm.
There is no negative cold emotes happening. They all have the "Central Heating" emote but still wear winter clothes on load.
A frustrating bug because I have to keep changing their outfits.
This has been happening to me since I purchased Seasons, so around two years. My sims constantly have winter clothes on indoors, After returning from CAS/Manage Worlds, getting out of the shower, and loading up my save. I do use cc, but only hair, eyes and some neckwear so i doubt it has anything to do with that, esp where this is a pretty well known bug. My sims also never bother changing back to their normal everyday wear after returning inside. It may have gotten somewhat worse since the no shoe rule was introduced in SE, but i can't say for sure. This has been a bug for a long while though.
EDIT: I forgot to mention that my sims also get home from work in their work uniform and will not change into cold weather OR hot weather clothing upon entering my lot until they go inside and back out again. unsure if this is a bug or a feature
