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Fixed in 2020.2.X

Fixed in 2019.4.X, 2020.3.X, 2021.1.X



Found in









Issue ID




[Metal][Mac] Artifacts appear in Prefab mode if Metal Editor support is enabled



Steps To Reproduce:

1. Create a new project
2. Hierarchy > 3D> Cube
3. Drag the cube to Project window to make a Prefab
4. Double click the Prefab to view it in Prefab mode > drag Game object
5. Ensure that the skybox is turned off in Scene Effects dropdown option

Observed Result:
Weird artifacts appear in the Prefab Mode

Expected Result

Prefab mode opens up without any issues

Reproducible On: 2018.4.24f1, 2018.4.20f1, 2018.4.0f1, 2018.3.0f2, 2021.1.0a4, 2021.2.0a1

Workaround: Disable Metal Editor Support in Player Settings


Occurs only on macOS Catalina, only with Intel UHD/HD Graphics 630 cards.

  1. Resolution Note (fix version 2020.2):

    A solution is in the next release. In the meantime, the issue is specific to MacOS Catalina with some Intel graphics cards, and can be worked around by upgrading to MacOS Big Sur or by going to Unity->Preferences...->Colors to set the alpha value of the "Background" color and "Background for Prefabs" color to 1.

  2. Resolution Note (fix version 2020.3):

    Verified on :
    Version: 2020.3.2f1.104
    Revision: 2020.3/staging 58594120496c
    Built: Wed, 17 Mar 2021 16:39:51 GMT

  3. Resolution Note (fix version 2019.4):

    Verified on :
    Version 2019.4.22f1 (9fdda2fe27ad)
    Wed, 03 Mar 2021 01:24:36 GMT
    Branch: 2019.4/staging

Comments (1)

  1. KokodokoGames

    Sep 24, 2020 10:18

    I experience the same pixelated grid. In my case it happens when I import a .unitypackage from an older version of Unity. I was able to fix it by creating a new scene and copy>pasting all gameobjects manually from the old scene to the new scene. I also had to throw away an auto-generated lighting object that appeared in the projects pane after importing the package.

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