As we saw with issue https://github.com/Ellypse/Total-RP-3/issues/12 since we are using Blizzard's default dialog for text input, if other add-ons interfere with that dialog it can create issues within Total RP 3.

To be completely future proof, the best solution would be to design our own pop-up for copy-pasting link. It would also allow for more customization (having the URL appear on multiple lines so more of the URL is visible to the user).