How to reproduce:
1) Open JSP file in Source Editor
2) Type following line:
<%@include f%>
3) Set cursor after "f" character
4) Invoke code completion
5) "Press Enter on "file" item
6) NOTE - Line look like this correct one:
<%@include file=""%>
7) ERROR - Cursor is set after second quote
character, but it should be between quote characters

FYI:
2. case is correct:
1) Type following line:
<%@include f
2) Set cursor at the end
3) Invoke code completion
4) NOTE - Line is automatically completed and
looks like this correct one:
<%@include file=""
5) NOTE - Cursor is set between quote characters -
that is correct behaviour