Menu texts are not appearing on Menu bar for all SAP standard screens

Hi All,

We are facing a strange issue. Our quality systes was upgraded to ECC6 EHP5. when we checked all menu bar texts not appearing on the menu bar. Instead of that menu bar is displaying (A) (B) (C) etc. for some of the transaction menu bar is appearing with Menu Edit (A) (B).

Can you please anyone of you tell me why it is happening like this?

Regards,

Jyothi CH.