I have an end user on Win10 and using Word 2016 that when he goes into a protected document with unprotected fields and tabs through the fields...he can type into the field but when he presses the backspace key he can backspace one character and then it will not backspace anymore than that. He can use the mouse and click on the field which will remove the highlight and place a curser where ever he clicks and then delete and backspace but this takes time. When I forward the document to somebody else using Windows 10 and also running Word 2016 it works fine. It only appears to be happening to him. I checked the "Ease of Access" settings and they appear to set to the same as the other end user. It used to work for this individual but now for some reason it does not. I know that deleting his profile in Windows will probably fix the issue, but then I would have to set all of his programs and printers again.