php suEXEC was enabled, LVE CageFS in litespeed either, but after upgrading to 5 LVE support is broken
it was working with the same configuration in 4 but now
Please switch back and forth between 4 and 5, see if it only break with 5. if yes, we may need to login to take a look. We have so many customers using CloudLinux CageFS, no other bug report so far.