Unclickable Bubble Outside Browser Viewport

I don't know if this is just a problem for me, but a bubble (that looks like it's part of the tutorial) shows up in an area outside of the browser viewport, and I can't click it to make it go away. I've tried getting rid of anything that could possibly be blocking it, and I've tried different browsers, but to no avail. I love this tool, but that bubble is bugging the heck out of me! Thanks for your hard work.