Reproduction steps:
1. Open the attached “DrawMeshNow_Player_Bug.zip” project
2. Open the “SampleScene”
3. Enter the Play mode
4. Observe the Game view
5. Exit the Play more
6. Build and Run the project (File > Build and Run)
7. Observe the Player

Expected result: Game view matches the Player, Render Texture pattern is visible on both Quads
Actual result: In the Player the Render Texture pattern is visible only for a few seconds and only on one of the Quads

Reproducible with: 2021.3.46f1, 2022.3.53f1, 6000.0.27f1, 6000.1.0a5

Reproducible on: Windows 10 (User reported), Windows 11
Not reproducible on: No other environment tested

Notes:
- Reporter noted that it works as expected in 2022.3 version and reproduces in 6000.0 on Linux, but while testing was not able to get the expected result on 2022.3 version
- GL.Clear appears to be working since the texture changes color from black to white, but the two colored rectangles rendered with DrawMeshNow do not appear