If you are see some strange question marks in your SAP menu area for some transaction screens,  then you should check the following areas for possible cases..

1 – Memory Areas

Text should be too large to fit memory area  , in this case we should check the parameters ztta/cua_area and ztta/short_area

2 – User Interface

Reason should be incorrect generation of user interface , in this case using “Screen Painter” (Se41) tool will help us.

To find the program name for related screens : System –> Status

Or you can use the program “SAPRSEUG” for generate all user interfaces , this will take between 30 – 60 minutes.