Using a Bow disable Ghost Dance even though it should not

With my Monk equipping a quarterstaff & bow with auras Wind Dancer & Ghost Dance should work on paper . But every time i switch to the bow it disable immediately Ghost Dance ( the Ghost Shrouds counter disappear from the screen and reappear when switching back to the Staff ) ...

Update after more tests : even though everything was toggled ON correctly , it seems removing everything and putting it back fixed the problem . But while switching weapons the Ghost Shrouds lower it's counter even though it should not so those auras seems to have a problem with the Code being used about some requirements ( probably weapons ) . Or maybe it comes from the Passive Tree I & II , i dunno .