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Thread: [6.5.3 Modern] Ext.Button again suffers the 300 ms delay inside UIWebView

  1. #1

    Exclamation [6.5.3 Modern] Ext.Button again suffers the 300 ms delay inside UIWebView

    In Ext JS 6.5.3 the Ext.Button renders an actual html button element. When run in the iOS UIWebView component (e.g. with Cordova/Phonegap) it suffers the known 300ms delay and feels very sluggish again (Ext JS 6.2.1 didn't have this problem). Am I missing a configuration? Is there a way to speed this up?

    I know about WKWebView but it's not an option as it comes with a lot of its own problems.

    Here I provide some sample code. The button tap event is fired after 300 ms, the mask tap event is fired immediately (so it's not a general problem).

        extend: 'Ext.Container',
        layout: 'vbox',
        items: [
                flex: 1,
                items: [{
                    xtype: 'button',
                    text: 'This is a button',
                    centered: true,
                    listeners: {
                        tap: function () {
                            console.log('button tapped');
                flex: 1,
                items: [{
                    xtype: 'loadmask',
                    message: 'This is a loadmask',
                    indicator: false,
                    listeners: {
                        tap: function () {
                            console.log('mask tapped');

  2. #2


    Ok, so this seems to be fixed in Ext 6.6.0.

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