When creating a Bluetooth Mesh Vendor model (https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/protocols/bt/bt_mesh/vendor_model/dev_overview.html) and if the vendor model is associated to the first element:
The Mesh App works fine and can retrieve the node available models, including the vendor one, and work with it. The same is true if instead of vnd_sampleModel it is replaced by the standard BT_MESH_MODE_NONE. So nothing new here.
The issue arises, if, for example, on the above case the Element 1 is activated. If Element 0, has the vendor model set as none, the Mesh app works fine and can retrieve both Element 0 and Element 1.
If however the vendor model is declared either on the Element 0 or Element 1, the Mesh app fails to retrieve the available models.