Reproduction steps:
1. Download and open the attached "MeshMemoryTest.zip" project
2. Build the project for iOS
3. In the Xcode build window, go to "Product" > "Profile" > "Allocations"
4. Record the memory usage
Expected result: Around 70 additional Mb is not allocated
Actual result: Around 70 additional Mb is allocated
Reproducible with: 2019.38f1, 2020.3.35f1, 2021.3.4f1, 2022.1.3f1, 2022.2.0a16
Reproduced with: iPhone 12 Pro (iOS 14.2.1), iPhone 13 Pro (iOS 15.0.0)