Hi there!
Thank you for reaching out to us!
I’ve ran some tests and wasn’t able to replicate the issue you are experiencing from here. This sounds like a plugin or theme conflict, so to get started, I would recommend you run a Conflicts Test. You can start the test by temporarily deactivating all of your plugins (except Modern Tribe plugins) and changing your theme to another one like Twenty Seventeen and let us know your test results (don’t forget to backup your database before changing anything).
I would also recommend you to start the test by deactivating the plugins that could somehow affect your URLs like Yoast SEO.
If you have any other questions in the meantime, please feel free to let me know and I’d be happy to help as best I can!
Cheers,
Patricia