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What is Preview Scene and wth is Unity trying to unload it

Discussion in 'Editor & General Support' started by snacktime, Jan 23, 2018.

  1. snacktime

    snacktime

    Joined:
    Apr 15, 2013
    Posts:
    3,356
    I am sporadically getting calls to SceneManager.sceneUnloaded with a scene by the name of 'Preview Scene'. Which exists nowhere in my project. Interesting note is zooming the camera in and out a significant distance, or switching between scene and game view, both appear to have a high chance of triggering this.

    Not a big deal now, once I figured out what the hell was triggering my unload logic that destroys a bunch of objects.
     
    snacktime, Jan 23, 2018
    #1

  2. Dave-Carlile

    Dave-Carlile

    Joined:
    Sep 16, 2012
    Posts:
    967
    EditorSceneManager has methods for creating and closing "Preview Scenes". At this point I have no idea what they are, though. You might look for calls that do that, maybe something from a store asset?
     
    Dave-Carlile, Jan 24, 2018
    #2

  3. Mamoon178

    Mamoon178

    Joined:
    Jul 26, 2017
    Posts:
    36
    delete your scene from build setting and add again. this is not any bug of unity
     
    Mamoon178, Apr 17, 2019
    #3
    skykapok likes this.

  4. Expertcow

    Expertcow

    Joined:
    Apr 24, 2021
    Posts:
    3
    the preview scenes are things that get created when you select a dropdown box. I would assume that they are created to simulate each of the options in said dropdown box. having too many preview scenes will make performance issues, which is why Unity is trying to delete them
     
    Expertcow, Jun 13, 2021
    #4