My experience bar disappeared

Can you try entering the command /console reloadui when logged into the game, Malzar?

Let me know if your experience bar returns.

Q u o t e:
no it still doesn't show my experience bar at all.

Have you recently installed in addons?

Do you use any addons whatsoever?

Q u o t e:
the only addon i installed was bartender4 which was after it disappeared

Can you return to your character select screen and click the "addons" button in the bottom left hand corner? Please uncheck each box to disable every addon and try logging into the game once more.

Let me know if the bar is still missing.