[Problem/Question]
// Detailed description of issue.
Hello! I’m trying to see if sendbird offline/cache sync can deal with a specific case on a PWA chat application. Basically I want to be able to deal with this scenario:
1º open chat app while being ONLINE;
2º type some messages;
3º close pwa;
4º Disconnect from internet;
5º Open chat app while OFFLINE;
6º type some messages;
7º Connect internet;
8º Wait for offline pending messages to sync with senbird server;
What I am having?
Imagine that I sent 3 messages while offline. Upon connecting to the internet the sendbird sdk gives me 6 Message Collection Events to deal with
Three onMessagesUpdate - EVENT_MESSAGE_UPDATE events;
Three - onMessagesDelete - EVENT_MESSAGE_SUCCESS events;
One onMessagesAdd - SYNC_MESSAGE_FILL events;
Analysis:
The three onMessagesUpdate make my pending messages, pending again. Which is ok! 
The three onMessagesDelete delete my pending messages. Which is ok, since they are pending
PROBLEM
I was hopping that the onMessagesAdd - SYNC_MESSAGE_FILL event came with the three messages I sent while offline with theyr status to ‘success’. But instead I only get one of them instead of the three 
But the strangest thing is that if I refresh the pwd everything appears correctly, so everything is being updated correctly on sendbird server, the 3 offline pending messages are saved there.
The only problem is just upon connecting the internet again (wihtou refreshing the page) the SYNC_MESSAGE_FILL does not come with all the messages that I sent while being offline :/.
Can you help me please?
// If problem, please fill out the below. If question, please delete.
[SDK Version]
// What version of the SDK are you using?
4.10.3
[Reproduction Steps]
// Please provide reproduction steps and, if possible, code snippets.
1º open chat app while being ONLINE;
2º type some messages;
3º close pwa;
4º Disconnect from internet;
5º Open chat app while OFFLINE;
6º type some messages;
7º Connect internet;
8º Wait for offline pending messages to sync with senbird server;
