Issue #32573: Garthar Does Not Sleep
I noticed that all the Thieves Guild footpads sleep except Garthar. I figured maybe his schedule was just different but I checked, he's supposed to sleep from 6am to 10am. I also would hit resetai on him, to see what he would do. He would walk toward the bed and not do anything.
I went into Creation Kit, loaded up the main master and the update esm. Found his bed marker. I reset the Z rotation and moved it a few units closer to his bed(s). Saved the patch. Loaded up my save and what do you know, he immediately goes to the spot and gets in the bed.
It's minor, but it seems like his bed marker is just a touch too far from his bed and it prevents him from sleeping.