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UI Canvas not following parent properly? [Confirmed, Fix in 5.5]

Discussion in '5.4 Beta' started by Yocal, Jul 14, 2016.

  1. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    Hello,

    There's a canvas with two images parented to my wand. Worked perfectly in 5.3, but when opening it in 5.4 it doesnt seem to parent as expected and becomes more like rubberband-bound compared to parenting :)

    Check it out: https://gfycat.com/FailingAlarmedHornedviper

    Is this a bug, working as intended - if so, how would one get it back to the normal state?

    - Emmett
     
    Yocal, Jul 14, 2016
    #1

  2. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    Here is a stripped down project that shows the problem. The canvas slides but the cube follows the controller. You can download it from here the next week:

    - http://wikisend.com/download/392310/FloatingCanvas.zip

    Looking forward to hear if I've done something wrong :)

    - Emmett
     
    Yocal, Jul 14, 2016
    #2

  3. superpig

    superpig

    Drink more water! Unity Technologies

    Joined:
    Jan 16, 2011
    Posts:
    4,657
    Could you submit that stripped-down project to our bug database via the 'Report a Bug' option in Unity, then post the bug number here, please?
     
    superpig, Jul 15, 2016
    #3

  4. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    Sure thing, superpig - It's submitted under case number: 814569

    For speed up bug-fixing:

     
    Yocal, Jul 16, 2016
    #4
    ProtonOne, superpig and Devil_Inside like this.

  5. ProtonOne

    ProtonOne

    Joined:
    Mar 8, 2008
    Posts:
    406
    I'm seeing the exact same thing, it didn't happen on 5.4.0b17, but I updated to 5.4.0f1 and my world space UI is acting like that too now.
     
    ProtonOne, Jul 19, 2016
    #5

  6. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    The problem was present in 5.4.0b25 as well, the version just before the RC1... If that info is of any use - at least we have it nailed down to somewhere in between b17 and b25 :)
     
    Yocal, Jul 19, 2016
    #6

  7. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    E-mail from the QA-team:

    We have been able to reproduce this issue and have forwarded it to our developers as a bug. However, we cannot say when or how soon it will be fixed.​

    So that's something :)
     
    Yocal, Jul 20, 2016
    #7
    ProtonOne likes this.

  8. ProtonOne

    ProtonOne

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    Mar 8, 2008
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    406
    Strange thing is this problem only happens in the editor. Builds seem to work okay (WebGL & Windows anyway).
     
    ProtonOne, Jul 20, 2016
    #8

  9. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    Oh! Nicely spotted! Did not think about testing that. Back to 5.4 then i guess! :)
     
    Yocal, Jul 20, 2016
    #9

  10. Yocal

    Yocal

    Joined:
    Feb 10, 2014
    Posts:
    22
    E-mail from the QA-team:

    A workaround is to modify the SteamVR_UpdatePoses.cs script.. change OnPreCull to LateUpdate. This will make the controllers line up with the UI but they will be slightly more latent, so it is only recommended updating in LateUpdate when you need UI attached to the controllers.

    A proper fix for this is scheduled for 5.5 where the controllers will be updated before the UI, bringing latency down.
    ​
     
    Yocal, Jul 21, 2016
    #10
    elJoel likes this.