Hello I am having the same problem. I am trying to export the “Opera House” which is currently free on the market in the Epic Launcher. It will export the mesh but without the textures as an FBX, so I am trying to use a more sophisticated format such as gltf or glb. Both seem to export and then crash the UE5 editor before writing the file. I have tried this on Linux (Ryzen 3950X RTX3070 64Gb) and Windows (Ryzen RTX2070). I have tried both formats - gltf and glb. There is definitely something wrong with gltf - which stalls or takes longer than it should to export. But both cause UE to crash on both machines.
I am trying to export the Demonstration level. The “Overview” exports fine.