Hey,
I am using Ubuntu 25.04, I have a release built from source. I am running into the same issue.
I compared all the folders and files they feel the same. I was wondering where the 5.5 gigs of content was on a windows install. I am curious and would rebuild after copying them over?
Workaround for Linux using Steam Proton Experimental:
So I have a version of UE 5.6 running through steam proton experimental. I was able to create metahumans using that without problems. The epic games launcher works also. There is some lag with animations or tool-tips in the unreal editor. I was able to make Metahumans then rig them to the 3rd person template. I just couldn’t use a c++ template because it needs visual studio. I tried my best to get visual studio working in proton experimental but had no luck.
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add the epic launcher installer exe install, run experimental, run it
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add the epic launcher exe, run it experimental
For me: snap/steam/common/.steam/steam/steamapps -
install ue 5.6 check the check box for metahuman
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run it, It should run normally then you can pull the metahumans you make out put them into your linux build and use them just fine