[zokier]

> Right, but usually the licensing around libraries/templates is quite clear?

I think it would have been clear if UE had used legitimate licensed version of the software. In that case I'd imagine they would have gotten license to the auxiliary content too. But if they were using unlicensed pirate version of the software then they would not have had proper license to the content and so the output files would have been infringing too.

[kmichaels]

This case isn't about libraries/templates. If it were I think it would be a clearer copyright violation.

[zokier]

> the font or the colors used, the shape of a comment box, or the placement of certain components around the design which appear in the design file, but which are not the design itself

Sounds a lot like a description of a template to me