Unable to reproduce the issue.
As an update for survival you can now bottle experience by hitting an enchantment table with a glass bottle. This will currently store 10 xp per bottle.
When you die you can use /deathmarker to get the coordinates of where you died.
On death a protected chest will be generated to store your items in it. You have 5 minutes to get to it before it disappears and drops your items. If you want to unlock it sooner for a friend use the command /acunlock