11/23 19:14:52.984 An action was blocked in combat because of taint from FuBar_HonorFu - UIParent:SetAttribute()
11/23 19:14:52.984 Interface\FrameXML\UIParent.lua:1469 UpdateUIPanelPositions()
11/23 19:14:52.984 Interface\FrameXML\UIParent.lua:1357 CloseWindows()
11/23 19:14:52.984 Interface\FrameXML\UIParent.lua:942 ShowUIPanel()
11/23 19:14:52.984 Interface\FrameXML\WorldStateFrame.lua:287 WorldStateScoreFrame_Update()
11/23 19:14:52.984 Interface\AddOns\FuBar_HonorFu\HonorFu.lua:339
11/23 19:14:52.984 WorldStateScoreFrame:OnEvent()
Was trying to catch the error for some days and finally yesterday got it. I removed all addons and just one by one tried to get the error.
I have Embedded libraries and WAU, and update every day my addons.