Submenu behaving strangely after update

If you go to https://www.dev.humetricshss.org/ and mouseover Your Work, you’ll see that the Workshop Kit submenu is oddly aligned. The site has been updated to 6.1 and the theme has been updated to 2.3.0. Compare that to https://humetrics.org and the + sign is in the correct place. That site is still on 6.0.1 but the theme has been updated to 2.3.0. I’ve checked the backend and there’s no extraneous characters in the “workshop kit” menu title, and I can’t figure out why it’s aligned strangely. Help?

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