This happens too often but very hard to describe, it's related to the mouse moving on a form having two fields, and no drag and drop is really expected to happen.

Code:



removeCls (ext-all.js:19)
Ext.cmd.derive.removeCls (ext-all.js:19)
Ext.cmd.derive.enable (ext-all.js:19)
Ext.cmd.derive.enable (ext-all.js:19)
Ext.cmd.derive.ddEnable (ext-all.js:19)
Ext.cmd.derive.handleMouseUp (ext-all.js:19)
fire (ext-all.js:19)
Ext.cmd.derive.fire (ext-all.js:19)
Ext.cmd.derive.publish (ext-all.js:19)
Ext.cmd.derive.doDelegatedEvent (ext-all.js:19)
Ext.cmd.derive.doDelegatedEvent (ext-all.js:19)
Ext.cmd.derive.onDelegatedEvent (ext-all.js:19)
Ext.Function.i.bind.r (ext-all.js:19)

getData() return undefined

Code:



 removeCls: function(names, prefix, suffix) {
            var me = this,
                elementData = me.getData(),
                hasNewCls, dom, map, classList, i, ln, name;
            if (!names) {
                return me;
            }
            if (!elementData.isSynchronized) {
                me.synchronize();
            }

'this/me':


Code:



constructor {dom: null, id: "ext-quicktips-tip", el: constructor, hasListeners: statics.prepareClass.HasListeners, events: Object…}component: constructorconfig: Objectdom: nullel: constructorevents: ObjecthasListeners: statics.prepareClass.HasListenersid: "ext-quicktips-tip"initConfig: function () {}initialConfig: ObjectisDestroyed: truelastBox: nullmanagedListeners: Array[0]shadow: null__proto__: constructor$className: "Ext.dom.Element"