I’m not sure what you mean by “verified,” but if you're experiencing the issue with snow not disappearing, you could try these steps:

Fast-forward time: Use the game’s time acceleration to skip a few in-game days and see if the snow eventually disappears.
Check settings: Make sure that seasonal changes and snow melting are enabled in your game settings.
Remove mods: If you’re using any mods, disable them temporarily to see if one of them is causing the problem.
Reset the map: Save your progress, then reload the map or restart the game to force the environment to refresh.
Let me know if any of these help!

https://steamproxy.com/sharedfiles/filedetails/?id=3365366198