Are you sure that debuff aruas are working as intended with "show only dispellable" ?
I was noticing yesterday in 3s that it seemed to show a lot of debuffs which I couldn't dispel as a druid. Does it take into consideration your class, or does it show all poison, disease etc who different classes can dispel?
https://www.wowace.com/projects/gladiusex/issues/38
edit: was broken in https://github.com/slaren/GladiusEx/commit/d4ebb218831f4929cb2c8741c5d36ea04c5cc36c, missing param