Having the same issue. i had my sim die once and almost a second time because her needs bar stayed green instead of turning to red. they also get stuck on yellow alot half of my sims have at least one yellow bar that just wont change back to green (mostly the bladder and sleep bars) despite the specific need being full. Though i do have mods installed i have updated all of my mods and deleted those that didn't work or without newer versions. none of my mods change anything to do with needs so i'm quite confused as to what is going on.