Ctrl+B and Ctrl+F are still available to paste objects while user is actively editing text. This should not be allowed.
Ctrl+V does some kind of text only paste in the active text edit field (this makes sense) but hitting Ctrl+B or Ctrl+F (by default, paste in back/front) these will ACTUALLY paste artwork whatever it may be in the location copied from, WHILE the user is in the text edit field. This could mean unexpected behavior and user may not realize they pasted something as it may not even have drawn on screen.
Editing text should be single threaded, and focused on editing text, or you're just going to limit the keyboard shortcut possibilities or confuse users.