Yes, thats basically the issue I have with my servers. Yesterday I submitted a report, Plesk dev team was able to verify the bug and they are working on a fix.
Hi there!
Just adding some steps since Im having kind of the same issue.
Create random directory ("testing" in my case)
Create index.php file with random content (Something like "Testing File" in my case) inside random directory
Try to access random directory. Result: Im able to successfully...