Revision list in show history always empty on all files and microflows

I cannot see the version history of forms and microflows which is available under the 'Show history' button in one of my projects: The pop-up screen shows but the list of revisions will always be empty. I can view the application version history under changes without any problems though. Any ideas would be appreciated.
1 answers

This was fixed in Mendix 5.9, you can check the release notes here.