Open and Close New Tab Memory Leak IE9 HTML 5

[Richard.Spille]

REQUIRED INFORMATION

Ext version tested:

• ExtJS 3.4.0
• ExtJS 3.4.1

Browser versions tested against:

• IE9

DOCTYPE tested against:

• HTML 5

Description:

• Opening and closing several new tabs leaks memory.

Steps to reproduce the problem:

• In the attached example, create several (~10) new tabs and close them.
• Repeat

The result that was expected:

• Browser memory increases on creation of new tabs
• Browser memory returns to baseline after closing new tabs

The result that occurs instead:

• Browser memory never returns to baseline after opening and closing new tab

Test Case:

Ext.onReady(function(){    
    // Tab Panel with New Tab button.
    // New tabs are closable and have 
    // a large string as html content.
    
    var p = new Ext.Viewport({
        layout: {
            type: 'border'
        }
        ,items: [{
            region: 'center'
            ,xtype: 'tabpanel'
            ,title: 'Tab Panel'
            ,activeTab: 0
            ,tbar: [{
                text: 'New Tab'
                ,handler: function newTabBtnHndlr(btn, e){
                    var tp, newTab;
                    
                    tp = btn.findParentByType('tabpanel');
                    
                    newTab = tp.add({
                        title: Math.round((new Date()).getTime() / 1000)
                        ,closable: true
                        ,html: (new Array(10*1024*1024)).join("x") // big string
                    });
                    
                    tp.setActiveTab(newTab);
                }
            }]
            ,items: [{
                title: 'Tab 1'
                ,html: '<p><br>&nbsp;&nbsp;Press the New Tab button to create some new tabs, then close the tabs.</p>'
            }]
        }]
    });
});

HELPFUL INFORMATION

Screenshot or Video:

• not provided

Debugging already done:

• none

Possible fix:

• not provided

Additional CSS used:

• only default ext-all.css

Operating System:

• Windows 7 32bit

[mitchellsimoens]

Have you tried with 3.4.1?

[Richard.Spille]

The results seem to be about the same.

Have you tried with 3.4.1?