This issue has popped up occasionally (here is one When Clicking on links in the editor, multiple tabs open at random - #2 by Brando). Here is another (Multiple Downloads and Tabs Opening At The Same Time - #9 by bart) I don’t know if this a bug that’s being reintroduced on occasion or what…as it’s been reported on multiple browsers.
Despite the repeat issue, I couldn’t find an answer, in the forum, as to how the issue was cleared. I’d follow the advice given above but probably just email support.
I’ve had it happen but can’t remember how I cleared the issue. Did you try deleting the links>refreshing>adding the links back in?