Floating Menus Freaking Out

Hi, I have created a few floating menus that I keep on a side monitor, but when I duplicate (rather than create from scratch) and existing menu, the two menus go crazy and flash in and out on two separate monitors. I have to delete or disable one of the menus for the behaviour to stop. Anyone know how to resolve this?

You need to make sure they have separate identifiers after you duplicate them: