oUF does not hide buffs which are meant to be consolidated if the interface option "Consolidate Buffs" is enabled.

oUF won't adhere the UI option for it. I could add a option to actually consolidate buffs however.

Neato. It's really a feature I'm missing in oUF right now. :)

Could do it through a customfilter too
local function CustomFilter(...)
local _, _, _, _, _, _, _, _, _, _, _, _, consolidate = ...
return not consolidate
end