Transparency breaks when updating meshes in Realitykit

Code Block 
import RealityKit
let newModel = ModelEntity(
  mesh: .generatePlane(width: 1, height: 1)
)
var mat = SimpleMaterial(
  color: UIColor.blue.withAlphaComponent(0.5), 
  isMetallic: true
) 
newModel.model?.materials = [mat]
/* next line breaks transluency */
newModel.model?.mesh = .generatePlane(width: 1, height: 1)
/* next line fixes it */
newModel.model = ModelComponent(    mesh: .generatePlane(width: 1, height: 1),    materials: [mat])

In my code I was doing this every time a plane anchor updated:

Code Block 
  self.model?.mesh = MeshResource.generatePlane(
     width: planeAnchor.extent.x,
     depth: planeAnchor.extent.z + 10
    )

This resulted in a mesh updating its size, but the transparency completely breaking.

When switching to this, transparency worked correctly, but now I have to fully recreate the model whenever I want to update the size

Code Block 
 var material = SimpleMaterial(color: MaterialColorParameter.texture(resource!), isMetallic: true)
   material.tintColor = .init(white: 1, alpha: 0.5)
   self.model = ModelComponent(
    mesh: .generatePlane(
     width: planeAnchor.extent.x,
     depth: planeAnchor.extent.z
    ),
    materials: [material]
   )
 

Can we get some bug fixes in realitykit this year? So that we don't have to set isMetallic: true, and tintColor just to use a color with opacity? Or have to fully recreate the model just to update the mesh size? Thanks :)