Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/StartScene.unity“ Scene
3. Enter the Play Mode
4. Open the Memory Profiler (Window > Analysis > Memory Profiler)
5. Click the “Capture New Snapshot“ button in the Memory Profiler window
6. In the Game View, click the “Load sample scene” button
7. Open the Memory Profiler again and click the “Capture New Snapshot” button
8. In the Game View, click the “Load Start Scene” button
9. Open the Memory Profiler again and click the “Capture New Snapshot”
10. Compare the first and third memory snapshots by navigating to the Unity Objects tab in the Memory Profiler and checking the RenderTexture allocation values

Expected result: The third memory snapshot should match the first memory snapshot
Actual result: The third memory snapshot still shows RenderTexture allocations remaining in memory

Reproducible with: 1.1.8 (6000.0.56f1 , 6000.2.2f1, 6000.3.0a6)

Reproducible on: Windows 11
Not reproducible on: No other environment tested