Great question, blizzdesign! 🙂 Thanks for getting in touch.
Unfortunately, this is part of a larger known-issue that the plugin has with our plugin applying certain CSS classes to our markup. At present, we haven’t fully fleshed out how we’re going to resolve it, but we are planning to take care of it in a future release.
This means that, I don’t have any specific guidance to offer you for how to fix the errors you’re seeing, but hopefully, they’ll be resolved by upgrading to a future version. When that happens, it will be noted in our release notes.
Sorry I can’t be of more immediate assistance!