Currently I have a timefield implemented within a grid.

When I try to paste an item like '01:15' it fails. The combobox opens and selects the upper item from the list (doesn't filter). When I edit the pasted value (remove last 5 of 01:15), the filtering of the combobox goes well and I'm able to select the value.

Does somebody knows how I can fix this? Maybe something wrong with the first time the value is filtered within the list?

I used the following code to create the timefield (within the grid).
var cm = new Ext.grid.ColumnModel({
        // specify any defaults for each column
        defaults: {
            sortable: true // columns are not sortable by default
        columns: [
                header: '<?php echo $this->translate('Day');?>',
                dataIndex: 'dayw_id',
                editor: comboDays,
                renderer: Ext.util.Format.comboRenderer(comboDays)
            }, {
                header: '<?php echo $this->translate('Open from');?>',
                dataIndex: 'from_time',
                editor: new Ext.form.TimeField({
                    nullText: '<?php echo $this->translate('closed'); ?>',
                    id: 'open-from-field',
                    increment: 15,
                    format: 'H:i'
            }, {
                header: '<?php echo $this->translate('Open untill', true);?>',
                dataIndex: 'to_time',
                editor: new Ext.form.TimeField({
                    nullText: '<?php echo $this->translate('closed'); ?>',
                    increment: 15,
                    id: 'open-until-field',
                    format: 'H:i'
Hope somebody can help me out!