This is mostly from a Summoner's perspective. DoT's not applying has been an issue basically the whole game lifetime so far. But now with Eureka and NM's its even worse. One of the core aspects of Summoner is applying Bio III and Miasma III and using Fester. Fester only deals damage IF the DoT's are applied. This ties in with Summoners other mechanic of gathering Aethertrail to then go into Dreadwyrm Trance, it was recently updated to still give you stacks of Aethertrail even if you dont do damage with Fester.
My point:
Its very annoying to throw up Tri-Disaster and the DoT's not apply or to manually cast them and they still dont apply. Almost every NM I fight mostly resorts to me using Painflare(which sometimes then pulls the adds that everyone seems to ignore....) and Energy Drain. Anyone else have this issue? Can the Devs do anything about this?