WowAce

As the problem has come up several times I tried to find out what possibly could be done to solve the problem.

Adding a template and backdropcolor to the tooltip on creation helped for me. Authors are welcome to check out if behaviour is on non-ElvUI okay as well.

Changes on Core\GUI.lua:

:493ff

	tooltip2:ClearAllPoints() 

to

	tooltip2:SetBackdropColor(0,0,0,1)
	tooltip2:SetTemplate("Transparent", nil, true)
	tooltip2:ClearAllPoints()

:1602ff

		tooltip:SetScale(self.db.profile.tooltipScale or 1)

to

		tooltip:SetBackdropColor(0,0,0,1)
		tooltip:SetTemplate('Transparent')
		tooltip:SetScale(self.db.profile.tooltipScale or 1)

Dunno if this helps - was just a dirty way to not make the AddOn unusable to me.

Sounds like an ElvUI problem, similar to this one: https://github.com/SacredDuckwhale/Rarity/issues/133

Changing the tooltip appearance shouldn't cause any serious issues, at worst there might be graphics glitches which I'm sure you'll notice.