Hello! I have a Motif 6 in great condition. As of yesterday, my issue is that when I click (Voice) and then (Category Search) and then click on certain sound banks instead of leading me to the drop down window with all the available voices it leads me to different tabs. For example, when I click on the, "Bass Bank", the, "File", window pops up and when I click on the, "Drum/Percussion", bank it sends me to the, "Utility", window. Everything else works fine.
Sounds like trouble with the front panel. Try a Factory Reset, if that doesn't fix it take it to an authorized Service Center... dust can get into the instrument an mess with panel selection, worse case you have a bad board. Do not put too much pressure on the buttons.