Fw/Rwd buttons sending A#0 to instruments

I just bought a CC121 and I am finding that the Fwd/Rwd buttons are sending A#0 to some MIDI instruments and channels, whenever I use those buttons. I’ve unticked the CC121 in Studio Setup ‘In All Midi’ checkbox but it still happens and it does it for instruments/channels which aren’t even Monitor enabled. So there is literally no way I’ve found to stop it.