If notifications arrive in abundance, do not let them run into one another

[Edward Hart-Davis]

Yes, this is a stupid example, but it's a proof of concept of this potentially being an issue

[Riot]

You're right, it is a stupid example :) That kind of notification spam simply doesn't occur in normal gameplay.

The lines are already set to avoid overlapping each other, by moving to new lines below. Overlaps only occur if there are so many notifications that they would not be visible underneath, so we wrap back round. In this case, there's simply nowhere else to put the things.