I think I noticed this with my Dragon Kick Debuff on the boss. I was fighting with other monks and it seemed like their Debuffs were overwriting mine. I don't recall this happening in the past as I use my boss debuffs to keep track of where I am in rotation and I recall my DoTs/debeffs always appearing in green numbers at the start of the list. Now they disappear on me. Still need to test some more.