Action blocked in combat because of taint nui
 

Getting this in my taint log today...not sure what's causing it

6/1 14:07:23.271 An action was blocked in combat because of taint from nUI - SecureStateDriverManager:SetAttribute()
6/1 14:07:23.271 Interface\FrameXML\SecureStateDriver.lua:18 UnregisterStateDriver()
6/1 14:07:23.271 Interface\AddOns\nUI\Units\nUI_Unit.lua:753 setVisibility()
6/1 14:07:23.271 Interface\AddOns\nUI\Units\nUI_Unit.lua:765 setUnitID()
6/1 14:07:23.271 Interface\AddOns\nUI\Units\nUI_UnitRaidSort.lua:495 registerRaidSortFrame()
6/1 14:07:23.271 Interface\AddOns\nUI\Units\nUI_Unit.lua:476 setEnabled()
6/1 14:07:23.271 Interface\AddOns\nUI\Units\nUI_Unit.lua:429
6/1 14:07:23.271 nUI_Raid15Unit_Raid15:Show()
6/1 14:07:23.271 Interface\FrameXML\SecureStateDriver.lua:72 SecureStateDriverManager_UpdateUnitWatch()
6/1 14:07:23.271 Interface\FrameXML\SecureStateDriver.lua:111

Did you reload the UI while you were in a raid? in combat?

I did while I was in a Bg but not in combat

Okay -- it looks like, for whatever reason, it still had you in combat lockdown when the reload occurred. The good news is that it was a nUI5 taint and not an nUI6 taint.