more careful srcObject

apps/screen.js

             position: 'relative',
         }
         return ScreenShare.isOff ? [] : m('.screen-share', {style},
-            m('video[playsinline][autoplay]', {srcObject: ScreenShare.stream})
+            m('video[playsinline][autoplay]', {
+                oncreate: ({dom}) => {
+                    dom.srcObject = ScreenShare.stream
+                },
+                onupdate: ({dom}) => {
+                    if(dom.srcObject !== ScreenShare.stream) {
+                        dom.srcObject = ScreenShare.stream
+                    }
+                },
+            })
         )
     },
 }

apps/video.js

             ),
             m('video[playsinline][autoplay]', {
                 style: styleVideo,
-                srcObject: VideoShare.streams[username],
-                oncreate: ({dom}) => {dom.muted = username === State.username},
+                oncreate: ({dom}) => {
+                    dom.muted = username === State.username
+                    dom.srcObject = VideoShare.streams[username]
+                },
+                onupdate: ({dom}) => {
+                    if(dom.srcObject !== VideoShare.streams[username]) {
+                        dom.srcObject = VideoShare.streams[username]
+                    }
+                },
                 onremove: () => VideoShare.resetStream(username),
             }),
         )