Combobox+remote+multiple

[mazvv]

Hi all.
my combobox is remote and multiselect. code in python

Code:

${h.tags.select('_cars_rid', None, [],
		class_='easyui-combobox', valueField='rid', textField='name', url=request.route_url('be.cars.combo'), mode='remote',
		multiple='true', panelWidth='auto', style='width:246px;')}

works fine, combobox created. But I have 2 main problems with use it.
At first, when I type and select value, typed text is still present in combobox, like on image.
Second, I can't select next value, because remote request with all text, not with last only, see image