If users join room 1, type messages in it and then join another room 2. The messages fetching in room 2 will also includes that of room 1. See images below
As shown in the message above, room f15 is a new room, but the current logged-in User1 receives the old messages from f12. It seems that the number of rooms the users join result in the number of messages that they will receive when joining a room
Users join new room f14. Even though this is a new room, the result will still be randomly if the last fetching is the old messages from room f12
Description
If users join room 1, type messages in it and then join another room 2. The messages fetching in room 2 will also includes that of room 1. See images below
As shown in the message above, room f15 is a new room, but the current logged-in User1 receives the old messages from f12. It seems that the number of rooms the users join result in the number of messages that they will receive when joining a room
Users join new room f14. Even though this is a new room, the result will still be randomly if the last fetching is the old messages from room f12
or the new messages