Anyone else get a weird pop-up after opening this article? I'm using Firefox for Android, and after I open the article and begin scrolling, a little box pops up

Anyone else get a weird pop-up after opening this article? I'm using Firefox for Android, and after I open the article and begin scrolling, a little box pops up that lists the names of 2 local financial institutions and the word "remove." As I scroll down, the box moves, too. If I tap on one of the names or the word "remove" the box disappears. I only get this on Firefox for Android. The only reason it's rather worrying is because I happen to bank at both of the financial institutions on the list. They are both small, local institutions. Tried opening the link on a couple other devices but was unable to recreate this. The pop-up appears every time I open the link in Firefox on my phone, though.