If your a vampire and you burn in the sun and get multiple death msgs for example ExampleName Died ExampleName Died ExampleName Died ExampleName Died for one death will bug the gravestone and will make it have no items in it (I think it gets overwritten by other empty gravestones) so until its fixed and you dont want to loose your items to this bug I'd suggest living in the twilight where you can go outside 24/7 without fear of being turned to a pile of ash and loose your items