• Your Rocket.Chat Experimental app version: 1.25.0.13048
• Your Rocket.Chat server version: 2.1.1
• Device (or Simulator) you're running with: Android 9

When the app is off, the notification popup with the message and when i run the app the message don't appear.
If the discussion continue messages appears but not the first one.
But If the app is running in background and a notification come, the last message appear with all lost messages of the discussion

To Reproduce

step 1 : close the app
step 2 : wait a notification
step 3 : run the app (the message don't appear, sometime but few time the message can appear)
step 4 : talk to see messages appear but not the first one
step 5 : wait for put the application running in background or open another app without close Rocket.Chat
step 6 : wait a notification
step 7 : open the app => you can see all messages appearing