Like @rmescandon mentioned, when after re-login, seq will be set to 0 on server, so the first updatesGetDifference is TL_UpdatesDifferenceEmpty, and message before login never got updated.
Trying to handle this in Data::onUpdatesGetStateAnswer()
Like @rmescandon mentioned, when after re-login, seq will be set to 0 on server, so the first updatesGetDiffe rence is TL_UpdatesDiffe renceEmpty, and message before login never got updated.
Trying to handle this in Data::onUpdates GetStateAnswer( )