Reworked the Share Extension to use a subclass of MXKRecentsDataSource to show content, solved the room order issue, as well introduced a new class ShareExtensionManager responsible for Sharing content and communicating with the system to terminate the extension with the appropriate exit code when needed.

RiotShareExtension/ViewController/SharePresentingViewController.m

@@ -0,0 +1,50 @@
+/*
+ Copyright 2017 Aram Sargsyan
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "SharePresentingViewController.h"
+#import "ShareViewController.h"
+#import "ShareExtensionManager.h"
+
+@interface SharePresentingViewController ()
+
+@end
+
+@implementation SharePresentingViewController
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    
+    [ShareExtensionManager sharedManager].shareExtensionContext = self.extensionContext;
+    
+    ShareViewController *shareViewController = [[ShareViewController alloc] init];
+    
+    shareViewController.providesPresentationContextTransitionStyle = YES;
+    shareViewController.definesPresentationContext = YES;
+    shareViewController.modalPresentationStyle = UIModalPresentationOverFullScreen;
+    shareViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
+    
+    [self presentViewController:shareViewController animated:YES completion:nil];
+}
+
+- (void)didReceiveMemoryWarning
+{
+    [super didReceiveMemoryWarning];
+    // Dispose of any resources that can be recreated.
+}
+
+
+@end