Reproduction steps:
1. Open the attached “IN-105000_Materials Clipping Issue - 6.3 - v2.zip“ project (link in the internal comments)
2. Open the “SampleScene”
3. Enter Play mode
4. Move around in the Game view by dragging an invisible joystick with the left mouse button in the bottom-left side of the Game view, and rotate by dragging anywhere else on the Game view (touchscreen-like controls)

Expected result: Certain GameObjects (see Notes) are fully rendered at all times (except for the partial see-through effect caused by windows and doors for the walls and roofs)
Actual result: Certain GameObjects (see Notes) are sometimes rendered and sometimes not

Reproducible with: 6000.0.62f1, 6000.1.17f1, 6000.2.12f1, 6000.3.0b10
Could not test with: 6000.4.0a4, 6000.5.0a1 (script compilation errors)

Reproducible on: Windows 11 Pro (24H2 and 25H2)
Not reproducible on: No other environment tested

Notes:
- GameObjects in the results' section: The “New Sub Scene 1” > “TentL10 Open (4)” > “TentL1OOpen“ > “Roof”; the “New Sub Scene 1“ > “New Prefab“ > “houseroof”; the “New Sub Scene 1” > “LootableBox”/”LootableBox (1)”/”LootableBox (2)” and the main game character (could not locate the name of this GameObject as it’s never visible in the Scene view)
- Could not test in a new project (complicated setup with custom shaders, could not replicate in a reasonable amount of time)
- Could not test in the Player (the “SampleScene” does not get built properly with a different starting position and no ability to move around in the scene)
- Resizing the Game view and/or changing its resolution resolves the issue for the main game character and the “LootableBox”/”LootableBox (1)”/”LootableBox (2)” GameObjects, however, not for the “Roof” and “houseroof” GameObjects
- There may be more GameObjects in the “SampleScene” affected by this issue that are not mentioned in this description