Menu alignment error when using Child Theme

I just installed the newest version of Quest and noticed an error when using a child theme with it. My child theme’s Menu is no longer aligned to the right – it seems to be aligned left. This is very strange. It is the only inconsistency I’ve seen so far while using a child theme with Quest.

This should go without saying, but as a developer I must always use child themes so any adjustments I make (or may have to make in the future) are not lost if/when an update to the parent theme is applied. So having a simple child theme not work correctly with Quest is problematic and hindering me from purchasing the Pro version.

The site in question is live on a development subdomain which can be accessed from the internet, so let me know if you want the URL and credentials to log into the dashboard.

Thanks, and any help would be appreciated.