Seeing as it seems to work for everyone else (me included), chances are that you are doing something wrong.
Could you quickly open a terminal and issue the command:
GDK_NATIVE_WINDOWS=1 eclipse
If you aren't using the Ubuntu-provided eclipse, substitute the path to the eclipse executable for "eclipse".
If it works that way, you definitely were doing something wrong before. If not, you have stumbled across a different bug and should report that separately.
Seeing as it seems to work for everyone else (me included), chances are that you are doing something wrong.
Could you quickly open a terminal and issue the command:
GDK_NATIVE_ WINDOWS= 1 eclipse
If you aren't using the Ubuntu-provided eclipse, substitute the path to the eclipse executable for "eclipse".
If it works that way, you definitely were doing something wrong before. If not, you have stumbled across a different bug and should report that separately.