Safari showing pop-up with Instagram searches
When I search for a user on Instagram (through my iPhone 7), as soon as I open that user's profile (on Instagram), I get a pop-up notification in Safari. Pls see left image below.
Then if I click on this icon/notification (on the left), that Instagram profile opens up in Safari.
Note: I'm not logged in to Instagram in Safari and I've checked Safari's notifications (Safari> Preferences> Websites> Notifications) and Instagram is not added in there.
How do I stop Safari from showing these notifications? Thanks!
MacBook Pro, macOS High Sierra (10.13.6)