ui: fix dnd

packages/ui-default/components/autocomplete/ProblemSelectAutoComplete.tsx

@@ -11,7 +11,7 @@ const Component = React.forwardRef<any, any>((props, ref) => {
     <ProblemSelectAutoCompleteFC
       ref={ref as any}
       height="34px"
-      selectedKeys={value.split(',').map((i) => i.trim())}
+      selectedKeys={value.split(',').map((i) => i.trim()).filter((i) => i)}
       onChange={(v) => {
         setValue(v);
         props.onChange(v);