Reproduction steps:
1. Open the “IN-86864.zip” project
2. Open the “Assets/test/test.unity” Scene
3. Observe the arc in the Game View
4. Enter Play mode
5. Observe the Game View
Expected results: The arc looks the same before and after entering Play mode
Actual results: The arc’s borders become bigger after entering Play mode
Reproducible in: 2021.3.45f1, 2022.3.51f1, 6000.0.18f1, 6000.0.24f1
Not reproducible in: 6000.0.17f1
Testing Environment: macOS 14.6.1 (M2 Max) (Reported by the user), macOS 15.0 (M1 Max)
Not reproducible on: Windows Player/Editor (Windows 11 23H2), Mac Player (macOS 14.6.1 (M2 Max), macOS 15.0 (M1 Max)), iOS Player (iOS 18.0.1 iPhone 15 Pro Max), Android Player (Android 14 Pixel 9 Pro)
Workarounds:
1. Disabling the “FPSManager” GameObject, which sets the frame rate through Application.targetFramerate, fixes the issue
2. Enabling VSync through the Game View settings fixes the issue