Comment 4 for bug 757991

The same problem appears when using the program jEdit, which is also Java based.

The problem can easily be reproduced:

1. Install jEdit from the Ubuntu Software Center
2. Click on the "Add to Launcher" button while it installs
3. Click on the newly created jEdit launcher item

Performing these steps will cause a second jEdit launcher item to show up.

A related error is that clicking the original launcher item will start a new instance of the program instead of switching to the running one. However, trying to launch a new instance from the second launcher (using shift + click or middle click) only switches to the running instance.

If the option "Keep in launcher" is selected for the second launcher item and all instances of the program are closed, it is impossible to start the program from this launcher. Although it should be kept the item will also disappear after logging out and back in.