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Postponed means that the issue was either a feature request or something that requires major refactoring on our side. Since that makes the issue not actionable in the close future we choose to close it as Postponed and add it on our internal roadmaps and technical debt pages instead.

Postponed

Votes

0

Found in

2019.3

2019.3.1f1

2020.2

Issue ID

1231074

Regression

No

Images with "Preserve Aspect" enabled are jittering / moving around when scroll view content is moved

uGUI

-

How to reproduce:
1. Open attached project "PreserveAspectTest.zip" and scene "SampleScene"
2. Enter Play mode
3. In Game view, use mousewheel to scroll the up an down the images

Expected result: the images are scrolled up/down
Actual result: during the scrolling, the images move around / jitter

Reproducible with: 2019.3.1f1, 2019.3.8f1, 2020.1.0b4, 2020.2.0a5
Could not test with: 2017.4, 2018.4 (due to canvas breaking during downgrading)

  1. Response avatar

    Resolution Note:

    Issue is with pixel perfect being turned on in the canvas. As the image moves the rounding of the position to a whole pixel can change the size of the image. Preserve aspect then tries to maintain the aspect ratio so the jittering is observed. Disabling pixel perfect it works fine.

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