I'd have to see your config to say what's wrong, but the way the Quick Setup Wizard sets this up each Slot executes a Mapped Key (configured per Slot in your Character Set). The Control key map contains the default mapped keys used for that, with combinations of JambaMaster, Follow, and JambaStrobe. JambaMaster by default sends Ctrl+Shift+F12 to the current window, to execute a macro "/jamba-team iammaster all". If you changed any of those things, that could be related to the problem you're having

The Jamba command seems flaky sometimes, where depending on how quickly you're switching windows (and therefore jamba masters) the master might not update (or maybe updates out of order or something, due to the addon channel communications).