Mouse wheel operation failed in the ScrollViewer component in 4.2.0 version of Babylon.GUI

Bugs
1

When I change my babylon code to the version 4.2.0，I cannot use mouse wheel to scroll the ScrollViewer component. Everything was just fine in the 4.0.0 version.

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I find an example in the playground and it is normal.
https://playground.babylonjs.com/#3EF49E#5

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Then I changed my code to the playground verison of babylon.gui.min.js which is also 4.2.0 verison. And I got an error which shows “Uncaught TypeError: i.getFontOffset is not a function”.

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The “onWheelObservable” property in the “scrollViewer.ts” seems not been triggered. Only the “rootContainer” can get the mouse wheel event. Who knows what happened?

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2

You should try with 5.0, I think a fix has been merged to make mouse wheel work with the scroll viewer component.

If it still does not work, you may need to provide a PG so we can have a better look.

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