Strange Top Movies/Overflow interaction

I have found that if I use Overflow to move the Internet menu under the Overflow menu, then the Movies->Top Movies option starts crashing back to Low Tide every time I try and launch it.   Put the Internet menu back as a top level menu and it starts working fine.

I was wondering:

  • Does anyone else see this behavior or is it specific to my system?

  • Does anyone have any idea why this is happening - it seems a strange interaction