Do a temporary workaround for navigation bar background, fixes #3271

Riot/Modules/Room/EmojiPicker/EmojiPickerViewController.swift

@@ -91,9 +91,10 @@ final class EmojiPickerViewController: UIViewController {
         super.viewDidAppear(animated)
         
         // Enable to hide search bar on scrolling after first time view appear
-        if #available(iOS 11.0, *) {
-            self.navigationItem.hidesSearchBarWhenScrolling = true
-        }
+        // Commenting out below code for now. It broke the navigation bar background. For details: https://stackoverflow.com/questions/59716249/ios13-uitableview-uisearchcontroller-with-custom-hidessearchbarwhenscrolling#:~:text=On%20iOS%2013%2C%20if%20you,and%20it%20won%27t%20disappear
+//        if #available(iOS 11.0, *) {
+//            self.navigationItem.hidesSearchBarWhenScrolling = true
+//        }
     }
     
     override func viewDidDisappear(_ animated: Bool) {