In the new Launch Lightning SFM Delivery the Validation Message popup box has been poorly designed as it is to small to contain custom validation messages without scrolling to read them properly and the icon should show either as a button or a 3D logo so it is more obvious that you can click it.
It should use the full with of the screen size you have available or at least auto-size so the entire text is readable at once.
What is the underlying problem do you intend to solve with this idea?
Make obvious that you can click that icon and that custom message text is all displayed at once
How is the problem being addressed today, if at all?
No solution, need to keep explaining users that you can click that icon and users have to scroll to see all the text.