When you go to /civicrm/report/template/list?reset=1
and for example choose this contact report template
/civicrm/report/contact/summary?reset=1
..and click on the button 'Create report'
Then a popup window appears with
Report Title
Report Description
..and when you click the button 'Continue', the popup window disappears and nothing happens. No report is created.
I tried different browsers, but the problem stays the same.