Problems with transparency

Hello.

I’m building an application with VR and I have problems with the transparencies in the materials.

When I turn or move the camera, objects disappear or are incorrectly arranged in terms of their position relative to the camera.
If I choose an opaque material, it works perfectly, but when I modify it to transparent, things start to get weird.

The objects on screen are attached to each other, having only one parent.

The material is only marked as transparent, I don’t add anything strange as you can see in the images that I attach.

For more information I am using ForwardRendering as recommended for VR.
What’s going on, why isn’t it sorted correctly? Am I configuring something incorrectly?

I would appreciate your help as I need the sub-objects to have transparency. It it is a requirement of the project.

Thank you very much in advance.