1x [ADDON_ACTION_BLOCKED] AddOn 'Dominos' tried to call the protected function 'MultiBarBottomLeftButton1:Hide()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function Hide' [string "@FrameXML/ActionButton.lua"]:498: in function ActionButton_HideGrid'
[string "@FrameXML/MultiActionBars.lua"]:130: in function MultiActionBar_UpdateGrid' [string "@FrameXML/MultiActionBars.lua"]:111: in function MultiActionBar_ShowAllGrids'
[string "@FrameXML/SpellBookFrame.lua"]:105: in function <FrameXML/SpellBookFrame.lua:96>
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function Show' [string "@Interface_Vanilla/FrameXML/UIParent.lua"]:2168: in function SetUIPanel'
[string "@Interface_Vanilla/FrameXML/UIParent.lua"]:2013: in function ShowUIPanel' [string "@Interface_Vanilla/FrameXML/UIParent.lua"]:1881: in function <Interface_Vanilla/FrameXML/UIParent.lua:1877> [string "=[C]"]: in function SetAttribute'
[string "@Interface_Vanilla/FrameXML/UIParent.lua"]:2660: in function ShowUIPanel' [string "@FrameXML/SpellBookFrame.lua"]:46: in function ToggleSpellBook'
[string "TOGGLESPELLBOOK"]:1: in function <[string "TOGGLESPELLBOOK"]:1>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:491
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:491
SetScript = defined @!BugGrabber/BugGrabber.lua:491
}
event = "ADDON_ACTION_BLOCKED"
events =

Are you able to reproduce this with just Dominos + Dominos_Config enabled? Are you playing on retail or classic?