Upload tab on images causes page to scroll to bottom

I'm experiencing the same problem on my ckeditor 4.1 customized version.

I cannot reproduce it with the standard downloadable version and I don't get why it is happening

In my case it happens only in chrome and with dialog window I have modified (link and image)

I debugged and it seems to happen when the setStyle function is called. with params "visibility" and ""

this.$.style[CKEDITOR.tools.cssStyleToDomStyle("visibility")]= "";

if you are able to reproduce it please create a ticket in http://dev.ckeditor.com/ or tell me how to reproduce it and I will create the ticket.

these are my customization:

CKEDITOR.on('dialogDefinition', function (ev) {
	var dialogName = ev.data.name;
	var dialogDefinition = ev.data.definition;

	if (dialogName == 'image') {
		ev.data.definition.dialog.on('load', function() {
			var urlElement = this.getContentElement('info', 'txtUrl');
			urlElement.on('change', function() {
				var size = CKEDITORCUSTOM.checkUrlIsUploaded(ev.editor, this,'');
				if (size === '') {
					ev.data.definition.dialog.getContentElement('info', 'imageSize').disable();
				} else {
					ev.data.definition.dialog.getContentElement('info', 'imageSize').enable();
				}
			});
		});
		dialogDefinition.minHeight = 250;
		dialogDefinition.minWidth = 420;
		dialogDefinition.removeContents('advanced');
		dialogDefinition.removeContents('Link');
		var imageInfoTab = dialogDefinition.getContents('info');
		imageInfoTab.remove('txtHSpace');
		imageInfoTab.remove('txtVSpace');
		//imageInfoTab.remove('htmlPreview'); bug: http://dev.ckeditor.com/ticket/9834
		//imageInfoTab.get('htmlPreview').align = 'left';
		imageInfoTab.remove('cmbAlign');
		imageInfoTab.remove('txtHeight');
		imageInfoTab.remove('txtWidth');
		imageInfoTab.remove('txtBorder');
		imageInfoTab.remove('ratioLock');
		imageInfoTab.get('basic').children.splice(0, 0, {
			type: 'select',
			id: 'imageSize',
			label: 'Select image size',
			items: ev.editor.config.Placeholder.ImageTemplate.imageSize,
			'default': ev.editor.config.Placeholder.ImageTemplate.defaultT,
			onChange: function (event) {
				var diag = this.getDialog();
				var urlElement = diag.getContentElement('info', 'txtUrl');
				var size = CKEDITORCUSTOM.checkUrlIsUploaded(ev.editor, urlElement,this.getValue());
				if (size === '') {
					this.setValue(this.default,true);
					event.cancel = true;
				}
			}
		});
		//dialogDefinition.getContentElement('info', 'imageSize').disable();
		var uploadTab = dialogDefinition.getContents('Upload');
        var uploadButton = uploadTab.get('uploadButton');
		uploadButton['filebrowser']['onSelect'] = function(fileUrl, errorMessage) {
			if (errorMessage==='') {
				ev.data.definition.dialog.getContentElement('info', 'imageSize').enable();
			}
		};
	}
	if (dialogName == 'link') {
		dialogDefinition.removeContents('advanced');
		dialogDefinition.removeContents('target');
		//var linkInfoTab = dialogDefinition.getContents('info');
	}
});

any solution?