Hello!
Thanks for the quick reply.
The zeus branch of meta-qt is in fact still on 5.13.2 and upgrading to 5.14 or 5.15 is unfortunately not an option for us. I've worked around this issue by creating an empty recipe for qtquick3d. That does the trick.
I was however expecting that the zeus branches of different layers (namely meta-imx and meta-qt) are compatible.
Christian