I have noticed this issue too, I fixed it by applying this in my CallbackUpdate
Lua Code:
self:EnableMouse(false) -- For some off reason we need this so we can click our plates..??
self.Health:EnableMouse(false) -- For some off reason we need this so we can click our plates..??
Just so you know the callback is called when you spawn them
Lua Code:
oUF:SpawnNamePlates("KkthnxUINamePlates", CallbackUpdate, CVarUpdate)
@lightspark might be able to spread some more info on this as to why this happens.
Be sure you are applying self.Health.frequentUpdates = true in your code
Also yes you can use the auras creation off oUF.