Fix not showing loading indicator when searching in web UI (#17655)

app/javascript/mastodon/features/explore/results.js

@@ -104,7 +104,7 @@ class Results extends React.PureComponent {
         </div>
 
         <div className='explore__search-results'>
-          {isLoading ? (<LoadingIndicator />) : filteredResults}
+          {isLoading ? <LoadingIndicator /> : filteredResults}
         </div>
       </React.Fragment>
     );

app/javascript/mastodon/reducers/search.js

@@ -41,7 +41,10 @@ export default function search(state = initialState, action) {
   case COMPOSE_DIRECT:
     return state.set('hidden', true);
   case SEARCH_FETCH_REQUEST:
-    return state.set('isLoading', true);
+    return state.withMutations(map => {
+      map.set('isLoading', true);
+      map.set('submitted', true);
+    });
   case SEARCH_FETCH_FAIL:
     return state.set('isLoading', false);
   case SEARCH_FETCH_SUCCESS:
@@ -52,7 +55,6 @@ export default function search(state = initialState, action) {
         hashtags: fromJS(action.results.hashtags),
       }));
 
-      map.set('submitted', true);
       map.set('searchTerm', action.searchTerm);
       map.set('isLoading', false);
     });