Maybe fix replacement issue

apps/streams.js

             height: '100%',
             transform: 'scaleX(-1)',
         }
-        return m('.video-container', {key: username, style: styleOuter},
+        return m('.video-container', {style: styleOuter},
             m('.video-info', {style: {position: 'absolute', zIndex: 999}},
                 m('span', {style: {padding: '5px'}}, username),
             ),
         return m('.videos', {style},
             m(Video, {username: State.username}),
             State.online.filter(username => username != State.username)
-                .map(username => m(Video, {username}))
+                .map(username => m(Video, {key: username, username}))
         )
     },
 }