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Fixed in 2021.1.X

Fixed in 2020.2.X



Found in



Issue ID




UIElements animation twiches when the Editor is minimized and restored

UI Toolkit


How to reproduce:
1. Open the attached project (
2. At the top of the Editor click 'AnimStutter' -> 'Example'
3. Mnimize and then restore the Editor (issue is 100% reproducible when hitting 'ALT + Tab' twice but can be reproduced in other ways)
4. In the 'AnimationStutterExample' window untick the checkbox

Expected result: animation starts and all the labels in the window smoothly fold to the top
Actual result: the labels fold to the top while twiching

Reproducible with: 2020.2.0b2, 2020.2.0b3, 2021.1.0a1
Not reproducible with: 2020.1.6f1, 2020.2.0b1

Close and reopen the 'AnimationStutterExample' window

  1. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.0a2

  2. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.0b13

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