Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
That is happening on the backend because you have set the settings of the permalink to be the full name with spaces, but then after the page renders WordPress is smart enough to understand that and change the space to the dash to load the page correctly.
This is the expected behavior since those are the settings you have chosen for the author page.
Don’t hesitate to get in touch if you have any other questions.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.