WowAce

Hi, I've started getting these errors with v10.2.3 in retail 11.0.2:

3x [ADDON_ACTION_BLOCKED] AddOn 'LibSharedMedia-3.0-8020003' tried to call the protected function 'ActionButton1:SetAttribute()'.
[string "@!BugGrabber/BugGrabber.lua"]:485: in function <!BugGrabber/BugGrabber.lua:485>
[string "=[C]"]: in function `SetAttribute'
[string "@Blizzard_ActionBar/Mainline/ActionButton.lua"]:488: in function `UpdatePressAndHoldAction'
[string "@Blizzard_ActionBar/Mainline/ActionButton.lua"]:554: in function `Update'
[string "@Blizzard_ActionBar/Mainline/ActionButton.lua"]:506: in function `UpdateAction'
[string "@Blizzard_ActionBarController/Mainline/ActionBarController.lua"]:187: in function `ActionBarController_ResetToDefault'
[string "@Blizzard_ActionBarController/Mainline/ActionBarController.lua"]:172: in function `ActionBarController_UpdateAll'
[string "@Blizzard_ActionBarController/Mainline/ActionBarController.lua"]:66: in function <...ActionBarController/Mainline/ActionBarController.lua:55>

Locals:
Skipped (In Encounter)

It comes at the same time that I get a popup saying LibSharedMedia-3.0 has been blocked from an action only available to the Blizzard UI, when I press a key on the default Blizzard action bars while in combat.