problem in copying text using shortcut keys vs POPup Menu

problem in copying text using shortcut keys vs POPup Menu

Copying or cutting the text using shortcut keys(CTRL+C or CTRL+X) and pasting test using Popup menu PASTE OPTION or tool menu (PASTE Option) is not properly working.

working with shortcut keys (cut,copy,then paste) OK
working with TOOL Menu (cut,copy,then paste) OK
working with Popup Menu (cut,copy,then paste) OK

Working with Shortcut keys(cut, copy) then Click Paste in Tool Menu or Popup is not working. 8)