More 'insecure code' errors, now in my addons!

[Phinix]

So ZOS changed something. I can't find any reference to what it was, but it is causing many addons to generate random 'insecure code' LUA errors, with no mention of the addon or any hooks it uses in the traceback, making it something of a challenge to track down.

For example Master Recipe List. It is causing the following errors when changing categories on the Crown Store purchase tab of the Housing Editor:

EsoUI/Ingame/HousingEditor/FurnitureClasses_Shared.lua:450: attempt to access a private function 'GetMarketProductPricingByPresentation' from insecure code
stack traceback:
	EsoUI/Ingame/HousingEditor/FurnitureClasses_Shared.lua:450: in function 'ZO_HousingMarketProduct:GetMarketProductPricingByPresentation'
	EsoUI/Ingame/HousingEditor/Keyboard/HousingFurnitureProducts_Keyboard.lua:80: in function 'ZO_HousingFurnitureProducts_Keyboard:SetupMarketProductFurnitureRow'
	EsoUI/Ingame/HousingEditor/Keyboard/HousingFurnitureProducts_Keyboard.lua:59: in function 'setupCallback'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:1462: in function 'ZO_ScrollList_UpdateScroll'
	EsoUI/Libraries/ZO_Templates/ScrollTemplates.lua:1222: in function 'ZO_ScrollList_Commit'
	EsoUI/Libraries/ZO_SortFilterList/ZO_SortFilterList.lua:155: in function 'ZO_SortFilterList:CommitScrollList'
	EsoUI/Ingame/HousingEditor/Keyboard/FurnitureClasses_Keyboard.lua:402: in function 'ZO_HousingFurnitureList:ContentsCommitScrollList'
	EsoUI/Ingame/HousingEditor/Keyboard/FurnitureClasses_Keyboard.lua:320: in function 'CommitScrollList'
	EsoUI/Libraries/ZO_SortFilterList/ZO_SortFilterList.lua:138: in function 'ZO_SortFilterList:RefreshData'
	EsoUI/Ingame/HousingEditor/Keyboard/FurnitureClasses_Keyboard.lua:372: in function 'ZO_HousingFurnitureList:OnCategorySelected'

If you look at EsoUI/Ingame/HousingEditor/FurnitureClasses_Shared.lua:450:

function ZO_HousingMarketProduct:GetMarketProductPricingByPresentation()
    return GetMarketProductPricingByPresentation(self.marketProductId, self.presentationIndex)
end

Master Recipe List doesn't touch this function, or either of it's values. Further it does not hook any of the functions listed in the traceback.

So, how are we supposed to troubleshoot a thing like this?