Chat bubbles sticking on edges

[YouToo]

Hey everyone! New member here.
I would like to ask for your help with something if it's possible.

You know how the nameplates were sticking to the edges of the screen by default in 7.0.3? Well today I did a few runs on Garrosh for the tusk shoulder mog, and I noticed during his talk with Thrall that their chat bubbles were sticking to the edges of the screen in the same way. I'm pretty sure they didn't do that before 7.0.3.

So the fix for nameplates was as follows:
/script SetCVar ("nameplateOtherTopInset", -1)
/script SetCVar ("nameplateOtherBottomInset", -1)

I've tried searching for any CVar like chatbubblesOtherTopInset or similar but found nothing. So what I'm asking is if it's possible through a CVar or a custom addon script to make them behave like before?
Thanks in advance!