Try this.
Oh, and make sure you are using Plasma on a blank home directory. Sometimes, using a preconfigured home directory from a previous install can cause issues.
This is true for any DE, just to clarify.
According to your tests, using a different distro with the same device works as expected. So this is solely (as far as we can see) an EnOS issue.
It is okay to use a different distro and ask for help here, just so long as you know your issue may be unique to the distro you are using. This is a great Arch community. The best IMHO.
For me, I need noisetorch (a noise cancellation app) for work. For whatever reason, when I had installed it while using EnOS, it just wouldn’t work properly, and I remembered that I had tried ArcoLinux and Archcraft before where it ran perfectly. So now I’m not using EnOS for the base install, but I’m using it as a secondary Repo.
Do what works for you.