Hi, yes this issue would be fixed once Github upgrades the Ruby implementation of the parser.
To upgrade the version it takes making a pull request to the github/markup repository so that they bump the version and do the release, but it takes some time before the upgrade is validated (security checks, etc...)
There another couple of issues that I would like it that they make it to Github, so once having those tackled I'll see if I can ask one of the maintainers to help out planning for an update soon.
Cheers