WowAce

9/9 15:43:23.284  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.284  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton1:Show()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:150
9/9 15:43:23.284  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.284  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton2:Show()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:150
9/9 15:43:23.284  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.284  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton4:Show()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.284      Interface\FrameXML\ActionButton.lua:150
9/9 15:43:23.849  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.849  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton1:Show()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:150
9/9 15:43:23.849  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.849  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton2:Show()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:150
9/9 15:43:23.849  Interface\FrameXML\ActionButton.lua:637 ActionButton_OnEvent()
9/9 15:43:23.849  An action was blocked in combat because of taint from ShadowedUnitFrames - OverrideActionBarButton4:Show()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:307 ActionButton_Update()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:638 ActionButton_OnEvent()
9/9 15:43:23.849      Interface\FrameXML\ActionButton.lua:150

This makes the hall ability unusable so the addon had to be disabled.

The button works fine for me all the time, probably another addon interfering, and SUF just gets blamed (the taint blame is often not accurate)

I know of that old bug but it's a horrible state of affairs when there is no direct indication of what does it so this addon must be disabled until then.

I can recreate this consistently by entering and exiting a pet battle, then trying to use the button. It doesn't happen with SUF disabled and does with only it enabled.

I also pet battle a lot so I guess it's related. I was about to say this error is often misleading but it gets out of hand if no addon assumes responsibility because it may be a synergy of addons doing it. But in this case I guess it's this in relation to pet battles.

This is persistent here. After a pet battle it taints the special button 1 action. The addons of pet battles used are rematch, pettracker, derangement's pet cds. I have not tried to see if it happens without pet addons at all but it's likely.