I’ve circled back to this, seems like no one else was interested in the topic, but incase someone in the future find this;
My original installation of Ubuntu 24.04 was using ZFS. I’ve recently re-installed Ubuntu 24.04.01 with the default file system.
I then installed the latest version of Unreal Engine for linux and it seems to be working now.
I’m not sure if it was ZFS or the previous version of Unreal causing the issue, but everything is working now.