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Fixed in 5.5.0f3



Found in


Issue ID




UI elements flicker with Editor on a second monitor and Game window on the main retina display



Steps to reproduce:
1) Open the attached project.
2) Place the Editor window on a second monitor.
3) Detach the Game tab from the Editor and place it on the main retina display.
4) Press 'Play'.
5) Click on the Scene view or Game view.

The UI button starts flickering and gets offset from the center of the Game window with each click and then returns.

Reproduced on:
5.5.0a5, 5.4.0f3

Did not reproduce:
5.3.6p2, 5.2.4f1

Machine used to reproduce the issue:
Main display: iMac 27" 5120x2880 (downscaled to 2560x1440)
Second display: 1920x1080

Comments (15)

  1. 033fb3ec7913173255f0f8066b8a10bf?d=mm


    Sep 10, 2019 14:16

    I just tried it on Unity 2018.4.6 (LTS) on a Windows 10 PC with a HTC Vive pro connected. The Display on HTC VIVE flickers constantly when two displays are on.

    Is there a resolution to this issue?

  2. 07c2e8449480a9ce4f822353ac998434?d=mm


    Sep 06, 2019 06:15

    Huge flickering happening on macbook pro while switching game objects or going in the play mode
    Unity version: 2019.2.3f1

    Did attach video how is flickering actually looking for reference

    <blockquote class="imgur-embed-pub" lang="en" data-id="a/nQQUHQa" data-context="false" ><a href="//"></a></blockquote><script async src="//" charset="utf-8"></script>

  3. Eb89b41492c05412fa51ddc5e4b07e05?d=mm


    Apr 19, 2019 00:43

    I still see this on 2019.1.f02. Seems like anything rendering via OnGui is affected.

  4. 93c866d47c8f306226361c1f8566d07b?d=mm


    Mar 15, 2019 10:02

    Still happening in 2018.1.6f1

  5. E05aa8b9fcdfeffe70b9d9705dd1a36c?d=mm


    Dec 07, 2018 03:51

    Still happens in 2018.3.0b12

  6. C55ffbcb705a74889cd8a0e3100ea771?d=mm


    Aug 25, 2018 16:55

    still happening in 2018.2

  7. 6ae419748d2d7a06e40a05a09247a580?d=mm


    Sep 29, 2017 19:30

    This is still happening to me in 5.6.3p1

  8. 429eb71018cf342371f7ee097a941703?d=mm


    Jul 14, 2017 02:07

    This is literally still happening? Is this not even being looked at?

  9. 520a7bbe0121875e85e0c6a4fcb260da?d=mm


    Jun 06, 2017 09:06

    Still occurs for me on Unity 5.6.1p1. Makes working with two monitors basically impossible.

  10. Bb1fdbfd531f63500fa35874b89ae607?d=mm


    Apr 12, 2017 21:29

    This still occurs for me on 5.5.0p1, on Mac OSX El Capitan.

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