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Chrome 43 breaks Sencha Touch / modern toolkit and how to fix it.

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Lately, I received a couple of questions about the latest Chrome 43.x version, which breaks Sencha Touch 2.4 apps (or Ext JS 6 modern toolkit apps) due the deprecation of the overflowchanged event. It actually breaks the following classes: Ext.util.PaintMonitor and Ext.util.SizeMonitor. You will notice this bug when trying to scroll in a list component. You will see a small square in the top right corner, instead of the familiar scroll bar, and it’s impossible to scroll.

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