Thank you for your post. I can reproduce the issue and put it on our list since this is not an intended behaviour.
As described in our documentation when working with joints/bones you should create one root node (root joint/bone) which is a parent for all joints/bones of your model. Try this for your model then it should work.
Hope that helps, Christian
about 5 years ago
I'm new to Wikitude ...
I develope on Xcode6 and use Wikitude SDK 4.0.2
I using Wikitude 3d Encoder convert some .fbx files to .wt3 and loading on IOS app
Everything is loadding well ... except one file cause app crash