[zork]

I looked again at my raidframe manager code. UIFrameFadeIn is actually causing a taint in combat. Probably because there is any hide or whatever involved.

I could add an animationgroup myself but actually just doing this works fine aswell:

local crfm = _G["CompactRaidFrameManager"]
    local crfb = _G["CompactRaidFrameManagerToggleButton"]
 
    local ag1, ag2, a1, a2
 
    --fade in anim
    ag1 = crfm:CreateAnimationGroup()
    a1 = ag1:CreateAnimation("Alpha")
    a1:SetDuration(0.4)
    a1:SetSmoothing("OUT")
    a1:SetChange(1)
    ag1.a1 = a1
    crfm.ag1 = ag1
 
    --fade out anim
    ag2 = crfm:CreateAnimationGroup()
    a2 = ag2:CreateAnimation("Alpha")
    a2:SetDuration(0.3)
    a2:SetSmoothing("IN")
    a2:SetChange(-1)
    ag2.a2 = a2
    crfm.ag2 = ag2
 
    crfm.ag1:SetScript("OnFinished", function(ag1)
      local self = ag1:GetParent()
      if not self.ag2:IsPlaying() then
        self:SetAlpha(1)
      end
    end)
 
    crfm.ag2:SetScript("OnFinished", function(ag2)
      local self = ag2:GetParent()
      if not self.ag1:IsPlaying() then
        self:SetAlpha(0)
      end
    end)
 
    crfm:SetAlpha(0)
 
    crfm:SetScript("OnEnter", function(m)
      if m.collapsed and not m.ag1:IsPlaying() then
        m.ag2:Stop()
        m:SetAlpha(0)
        m.ag1:Play()
      end
    end)
    crfm:SetScript("OnMouseUp", function(self)
      if self.collapsed and not InCombatLockdown() then
        CompactRaidFrameManager_Toggle(self)
      end
    end)
    crfb:SetScript("OnMouseUp", function(self)
      local m = self:GetParent()
      if not m.collapsed and not m.ag2:IsPlaying() then
        m.ag1:Stop()
        m:SetAlpha(1)
        m.ag2:Play()
      end
    end)
    crfm:SetScript("OnLeave", function(m)
      if m.collapsed and GetMouseFocus():GetName() == "WorldFrame" and not m.ag2:IsPlaying() then
        m.ag1:Stop()
        m:SetAlpha(1)
        m.ag2:Play()
      end
    end)