<critical bug> can open same file. that means lose data anytime.
This is critical bug and cause my job lost many times. When I using illustrator with unsaved, I can open same file . That means I can lose the data. I remember there were alert if I open same file or can not open for old version.
For example, Photoshop can not open same file if I use the data. So photoshop does cover this issue. Please fix this bug asap !! Thank