User Report:

I'm trying to transform and rotate the clipped VDB volume by using the regular transform node. But realized that the "vel" field is not rotated correctly.
And I found out the "OpenVDB Clip" node is changing the primitive intrinsic, "vdb_vector_type" from "contravariant relative" to "invariant".
This makes the vector fields couldn't rotate correctly. I can use the primitive wrangle to overwrite the intrinsic value but it would be better to fix it from "OpenVDB Clip"

Note that the OpenVDB Metadata SOP can also be used instead of a primitive wrangle.

The OpenVDB Clip SOP should be fixed to preserve the vector type.