Disconnected parts may not become transparent when symmetry is used.

[Ranganrs1]

Describe the bug A part may be fully opaque even when disconnected from the root part.

To Reproduce Steps to reproduce the behavior:

1. Enter the Workshop.
2. Place a root part (I used the Aeromaster 4-2 Cockpit)
3. Place another part, not connected to the root (I used a Type B Fuselage)
4. Enable symmetry.
5. Attach a part to the surface of the disconnected part (I used a Type M Streamlined Nosecone).
6. The mirror pair to the placed part will be opaque as if it is attached to the root.
7. When the detached group is moved, it will regain its transparency as expected.

This appears to work with any parts, assuming they can be radially attached. This does not happen if the parts are placed while attached to the root and then disconnected, only if they are attached to an already disconnected group.

Expected behavior Any parts not connected to the root should be transparent

Screenshots

Desktop (please complete the following information):

• OS: Windows 10 x64, Ryzen 9 5900HS, Nvidia RTX 3070 Mobile