APEX cloth glitch

I made a flag asset with two bones. The flag pole is weighted to the root bone, and the flag itself is weighted to the second bone.

I import the mesh and add the APEX asset through the asset viewer and this is what I see
http://grab.by/JE9q

As you can see the APEX asset makes the flag glitch out entirely. Anyone come across this before?

I am using Blender and the APEX Clothing tool.

I am having the same problem when truying to use apex clothing tool. anyone can help in this topic? thanks

I am also having this problem when using apex