Om MS Windows 7:
1. In the Windows explorer double click any ODF file --> LibreOffice starts and opens the file in a window.
2. Minimize the window (to the task bar)
3. In the Windows explorer double click the same ODF file again
4. The cursor changes to a pointer with an hourglass for some seconds but nothing else happens. The window remains minimized in the taskbar.
Expected behaviour: the minimized window with the already openend file should open.
This seems to be a lognstanding problem.
I found following unresolved bug reports in the Apache OpenOffice bugs list:
and another maybe related one from 2002:
*** This bug has been marked as a duplicate of bug 48300 ***