bug-fix: when other user leaves, do not remove channel

src/modules/ChannelList/dux/reducers.ts

@@ -108,28 +108,36 @@ export default function channelListReducer(
       .with({ type: channelListActions.ON_USER_LEFT }, (action) => {
         const { channel, isMe } = action.payload;
         const { allChannels, currentUserId, currentChannel, channelListQuery, disableAutoSelect } = state;
-        let nextChannels = allChannels.filter((ch) => ch.url !== channel.url);
-        let nextChannel = null;
-        if (channelListQuery) {
-          if (filterChannelListParams(channelListQuery, channel, currentUserId)) {
-            // Good to [add to/keep in] the ChannelList
-            nextChannels = getChannelsWithUpsertedChannel(allChannels, channel);
-          }
-        }
-        // Replace the currentChannel if I left the currentChannel
+
+        // If I left: remove from allChannels and replace the currentChannel if needed
         if (isMe) {
-          nextChannel = getNextChannel({
+          const nextChannels = allChannels.filter((ch) => ch.url !== channel.url);
+          const nextChannel = getNextChannel({
             channel,
             currentChannel,
             allChannels,
             disableAutoSelect,
           });
+
+          return {
+            ...state,
+            currentChannel: nextChannel,
+            allChannels: nextChannels,
+          };
+        }
+        // If someone else left: update allChannels if needed (don't touch currentChannel)
+        else {
+          let nextChannels = allChannels.filter((ch) => ch.url !== channel.url);
+          if (!channelListQuery || filterChannelListParams(channelListQuery, channel, currentUserId)) {
+            // Good to [add to/keep in] the ChannelList
+            nextChannels = getChannelsWithUpsertedChannel(allChannels, channel);
+          }
+
+          return {
+            ...state,
+            allChannels: nextChannels,
+          }
         }
-        return {
-          ...state,
-          currentChannel: nextChannel,
-          allChannels: nextChannels,
-        };
       })
       .with(
         {

src/ui/ChannelAvatar/index.tsx

@@ -66,7 +66,7 @@ function ChannelAvatar({
           alt={channel?.name}
         />
       )
-  ), [channel?.members, channel?.coverUrl, theme]);
+  ), [utils.getChannelAvatarSource(channel, userId), theme]);
   return (
     <>{ memoizedAvatar }</>
   );