[PLT-6616] Fixed autocomplete to close properly (#6528)

* fix autocomplete to close properly

* disable key press of suggestion box when input value is empty

webapp/components/suggestion/suggestion_box.jsx

@@ -237,7 +237,7 @@ export default class SuggestionBox extends React.Component {
     }
 
     handleKeyDown(e) {
-        if (SuggestionStore.hasSuggestions(this.suggestionId)) {
+        if (this.props.value && SuggestionStore.hasSuggestions(this.suggestionId)) {
             if (e.which === KeyCodes.UP) {
                 GlobalActions.emitSelectPreviousSuggestion(this.suggestionId);
                 e.preventDefault();
@@ -330,12 +330,14 @@ export default class SuggestionBox extends React.Component {
         return (
             <div ref='container'>
                 {textbox}
+                {this.props.value &&
                     <SuggestionListComponent
                         suggestionId={this.suggestionId}
                         location={listStyle}
                         renderDividers={renderDividers}
                         onCompleteWord={this.handleCompleteWord}
                     />
+                }
             </div>
         );
     }