You found a bug! We've classified it as EXTJS-15309 . We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
  1. #1
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    Default Collapsible Panel is expanding with a weird animation

    Collapsible Panel is expanding with a weird animation


    I created a simple layout in my ExtJS 4 project with Container (Layout VBox) and several panels inside this container.

    One of these panels has the property collapsible: true. When I click on this panel it collapses the way I was expecting (the animation show it disappearing bottom->up), but when I click on the panel again, it expands with a very weird animation (bottom->up again; I was expecting top->down). You can see how it's behaving in this GIF

    kxfnlNN.gif

    This strange animation is making the panel move over another panel for half a second before move to the correct position.

    Does anybody know how to fix this?

    Thanks.

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    Hi,

    Can you share your code you're using? Perhaps you can fork the below fiddle as a place to start or share your own?

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    I shared my code here: https://fiddle.sencha.com/?fiddle=b33#fiddle/b33

    Thanks

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    I'm seeing the exact same behavior in 4.2.3. It is only if the panel is at the bottom. I'm assuming it is a bug.

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