Embedding BranchTrack into Articulate Rise gives a warning

I successfully embedded BranchTrack into a Rise course last year, and therefore know it works. I now tried to embed the same scenario into another course as a demo, and I get a rather ugly warning that the browser is outdated (see screen shot below). The scenario still works,but the message will be distracting for learners. I started a discussion on e-Learning Heroes to see what Articulate comes back with, but I also wanted to check with you if this could be related to Articulate not allowing IE 11 anymore. The timing would make sense. I don't think that this is on your end, but as Articulate is usually slow fixing anything, I would like to know if a) my suspicion is correct and b) if there might be a workaround to prevent the message from showing.