Ireport Menu Behaviour 5.0.1

[kruger53]

I've been using IReport 4.7 quite happily and decided to update to 5.0.1.

Now when I click a menu option it presents the submenu but that submenu disappears when I release the click button.

If this doesn't make any sense then as an example I can click the File option and the File menus options appear (New, Open, Open Recent...) but the second I release the click button to select one of these options the File Menu disappears. Making using the mouse for almost anything impossible.

It works fine if I just use the keyboard (ie. Alt F then down arrow to the required option, then enter)

Version 4.7 works fine but I have checked 4.8 and it behaves the same as 5.

I'm using Linux Mint 13 Maya and java 7 (with the JDK installed).

Any ideas?

Mark