The problem is the button to tactical sprint doesn’t exist on UEFN but on creative 1.0 does same goes for battle royal and no builds
Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative
For more information, such as how to get the reference ID, please check out the article here: https://create.fortnite.com/news/using-the-creative-and-uefn-bug-reporting-form