Apparently this problem should be fixed but it isn't for me! Their icons are gray and I can't even access my inventory because the Sim is "not home", is there any way to fix this? The only way I found is to go to manage worlds and come back, but it's getting frustrating having to do that every time.
Are you playing on PC and use mods? If it so, please test it without mods. If you encounter this bug each day, then likely this is special rare bug, or you have a mod which is outdate. (don’t forget to delete your localthumbcache.package before your restart your game without mods)