The rounded Frame mask for the participants horizontal list view is only working on Android, on iOS it goes out of the border
Add a animation hiding the controls when double tapping the message list, or swiping the entry: gestures are ok on iOS but are not working on very well (to say the least :) on Android
CollectionView is lacking Padding so I added dummy elements to the bottom and the top to emulate padding
The message list displays now under the controls
Automatic random message creation every 5 seconds
Button disabled when nothing is typed
Auto scroll to the end (the top x) when a new message from the user is entered