When doing the world boss in Nazjatar this error popped up, which I though was quite odd.
I have no idea why Auctionator would be interacting with CompactRaidFrames, but Blizzard did pretty much rewrite the CompactRaidFrame code in 8.2.5, so perhaps something is awry.

1x [ADDON_ACTION_BLOCKED] AddOn 'Auctionator' tried to call the protected function 'CompactRaidFrame3:ClearAllPoints()'.
!BugGrabber\BugGrabber.lua:519: in function <!BugGrabber\BugGrabber.lua:519>
[C]: in function ClearAllPoints' FrameXML\FlowContainer.lua:157: in function FlowContainer_DoLayout'
FrameXML\FlowContainer.lua:17: in function FlowContainer_ResumeUpdates' ...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:185: in function CompactRaidFrameContainer_LayoutFrames'
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:130: in function CompactRaidFrameContainer_TryUpdate' ...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:57: in function CompactRaidFrameContainer_OnEvent'
[string ":OnEvent"]:1: in function <[string ":OnEvent"]:1>

Locals:
InCombatSkipped

Nvm after disabling the error still showed but was attributed to a different addon.