Input inside tippy breaks selection when mouse goes outside

[davesnx]

Bug description

Selection to an input that you drag outside of the tooltip loses selection. It loses selection when the mouse drags out of the parent element.

That behaviour doesn't happen when an input is placed in the body: https://output.jsbin.com/riqujoqesi

I tried to investigate why this happens, but haven't found a great reasoning rather than

Reproduction

https://codepen.io/davesnx/pen/NWYopoZ