This is an incredibly annoying bug that I've encountered a few times now, where the loot stash (prefab: klaus sack) does not respawn after the first winter.
On a solo world, I wait for the first day of every winter to search the mosaic and deciduous biomes for a loot stash, but there's none at all every time. I've had a similar problem in other local worlds. The deers will respawn every year with no problem
Using c_countprefabs("klaus_sack") returns a zero value. Using c_gonext("klaus_sack") the first time returns a "no objects found." But if I enter it a second time, I get teleported to a loot stash in a location which I had already re-explored.
I've attached a screenshot of the console commands I used, which proves that by default the loot stash is not spawning
vanilla world settings with caves enabled Locally created server