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Fixed in 2020.1.X

Fixed in 2019.3.X

Votes

0

Found in

2019.2.0a7

2019.2.6f1

2019.3.0a1

2020.1.0a1

Issue ID

1189110

Regression

Yes

[WebGL] Mouse events are not called on builds when the scene does not have Event System object

IL2CPP

-

How to reproduce:
1. Open the attached project ("case_1189110-Button_Test.zip")
2. Open the repro scene ("SampleScene")
3. Enter Play Mode
4. Click on the sprite object and notice how it rotates after receiving OnMouseDown event
5. Exit Play Mode
6. Make a WebGL build and run it
7. Click on the sprite object again

Expected results: The sprite is rotated in OnMouseDown event the same way as in the Editor
Actual results: The sprite is not rotated as OnMouseDown is not called when clicking on the object

Reproducible with: 2019.2.0a7, 2019.2.9f1, 2019.3.0b6, 2020.1.0a8
Not reproducible with: 2017.4.33f1, 2018.4.11f1, 2019.2.0a6

Notes:
1. OnMouseEnter and OnMouseExit events are also not called
2. Adding Event System in the scene fixes the issue in some cases
3. Disabling Engine Code Stripping also fixes the issue

  1. Resolution Note (fix version 2020.1):

    Fixed in 2020.1.0a21

  2. Resolution Note (fix version 2019.3):

    Fixed in 2019.3.6f1

Comments (2)

  1. Dantorius

    May 12, 2021 15:47

    Still seeing this issue in Unity 2021.1.6.f1.

  2. Shy_

    Dec 17, 2020 07:33

    Still seeing this issue in Unity 2019.4.16f1 LTS.

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