Loaded after save and all equipment and clothes disappeared. Tried multiple times same resulted. Structures included fire and tent still there though.

I'm afraid this is not a bug, but DRM... See this post:

https://www.gog.com/forum/general/drm_on_gog_list_of_singleplayer_games_with_drm/post860

Looks like game is still checking for Galaxy (Communication Service) when loading a savegame and detecting game as demo if you don't use Galaxy (are you?)

Thanks. Like to play offline. Really stupid as can't start new game without Galaxy running.

It's a bug. The devolopers said they were hoping to address it with the 0.9 update as it is impacting Steam users as well.

https://steamcommunity.com/app/1380220/discussions/0/3378284761897329459/#c3378285310307967524

Where are you seeing 0.9 for GoG though? I can only get 0.8 to show up on the download options.