Mr. Bhimani,
I feel your Ratio option is switched off. Please check as below
click View menu on the top of window on the menu bar, then click Structural tool tip options, then Beam option on the right side, then click Ratio, then OK and close the dialogue box. Generally designers switch it off to have a small box to see only the member no.If still it does not not work then software problem may be there, the possibility of which is remote.