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Duplicate

Votes

13

Found in

2017.3.1f1

Issue ID

1034639

Regression

No

[WebGL][Chrome] game freezes after switching the browser tabs

WebGL

-

To reproduce:

1. Open the project, attached by the user (link in the edit)
2. Build and run for WebGL
3. In the build, switch the tabs back and forth a couple of times
4. Observe that the game freezes

Expected: the game doesn't freeze when switching between tabs

Reproduced in 2017.3.1f1, 2017.4.2f2
Could not reproduce in later and earlier versions due to shader and other errors in the console which prevents the building of the project completely

  1. This is a duplicate of issue #1088870

    Setting Application.targetFrameRate in script causes game to freeze when switching to a different tab and back
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Comments (14)

  1. Walkure

    Jul 31, 2018 14:17

    I found some steps :
    1) open Web-GL game
    2) open console (f12) only for fast un-focus
    3) goto other page ( sometimes i reload different pages )
    4) return and click on game canvas -> freeze 80% chance.
    But our game still write logs to console and handle click by screen =)
    But render is disabled.

    Fix : canvas resizing helps but it very bad idea =)

  2. Walkure

    Jul 31, 2018 13:33

    We have the same problem with a Unity WebGL build with Unity 2018.2.0f2

  3. FernandoChen

    Jun 12, 2018 05:17

    Same problem here after we upgrade from 5.6.4p1 to 5.6.6f2.
    Seems to happen only on Chrome 67, can't reproduce on Chrome 66.

  4. PSchaussPlaya

    May 31, 2018 14:02

    We have the same problem with a Unity WebGL build (WebAssembly) with Unity 2018.1.0f2. So this is still an issue.

    I seems to happen when switching to another tab for some time and then switching back.
    Interesting observation: All rendering seems to be completely frozen (our game is UI only) but buttons seem to be still clickable because related sounds are still played. So I assume that the game is still running normally and that only the rendering is broken.

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