Maybe an error is happening when you enter that page, check your console in studio pro to see if an error appear.
Go to navigation in your project Explorer and see what microflow or from is being called. There must be a error here as Joshusa said,
You’ll either find an error in the console in Studio Pro, or if not, then your home page may be trying to run a microflow that your user doesn’t have access to. If that’s the case, you can trace the network traffic in Chrome’s dev tools by going to the network tab, clicking on “preserve log” and then reproducing the issue. The line item in red will have a 401 response. You can inspect that line to see what the request was for.