After a while the popup text disappears and collapses into one line.
Not sure what is the trigger, I usually only see it when I alt tab out for a while after launch.

Using v8.0.1-5beta, but happened with earlier versions as well. But before I dont remember seeing the borders collapsing over themselves. Or maybe the style changed recently?

Yes, I changed the style of the box. Still not happy though.

You only get this bug when you're afk for some time?

Everytime we check for new quests at firsr we clear the popup. I'll make sure we don't clear the tooltip if the tooltip is shown.