Question
Pop Up Issue - Mysterious box appearing after closing?
Hey guys,
My team has identified an issue with our Marketo pop up where when it closes a mysterious box appears (screenshot below) - has anyone encountered this before?

We've got it set to using the default closing button.
The link to the pop up is here: Motorhome Republic Home - Campervan Hire and RV Rental
Any ideas on what's going on or how to fix it would be greatly appreciated!