Hi Amol,
The same kind of issue we had come across in our SCM landscape. This was solved after reinstalling the SAP GUI to 740. Often these issues will come in SAP SCM due to GUI.
We do assign these work to our workplace team who will completely delete everything and reinstall.
You can do one more thing. Try to replicate the same in another users machine. If it works obviously there is a problem with this user's GUI only.
Regards,
Jegan Raj