Why is Foundation.app running on my phone even after I closed the website?

I have opened https://foundation.app the other day (iOS, Chrome) and closed it after 10 minutes of browsing.
Why is it listed in my Screen time as an installed application with 6+ hours of screentime? (See picture below.) Anyone ever experienced this before? I definitely did not have anything related to this website open for hours…
submitted by /u/4dm1r4lg3n3r4l
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