Validation Tooltip inside horizontal form not just below input when label multiline

Created by: Outlivier

Problem Description

When using validation tooltip whith horizontals forms, the tooltip position is not just below the input when label is display on multiple lines :

Source to reproduce the problem : CodePen Source (need a resolution at minimum of 1280*1024 to display the form horizontally)

I'm not sure if it's a bug or a design decision, because it's due to top:100% on invalid-tooltip class.

If it's a design decision, can i safely remove top 100% whithout side effects ?