[WhatsApp]Blue ticks don't appear on all read messages

[siddhartharao17]

So if 5 messages are sent one after the other, blue ticks appear only on 1 or 2 messages. rest all show green ticks in FirefoxOS 2.6.0.0-prerelease

[tibtab]

same with fxos 2.1 especially media messages are sometimes even shown as not being sent

[oli3]

Aucun doublon quand j'envoies des msgs à mes amies et il n'arrive pas a m'ecrire non plus ainsi que dns mes différents groupes

[oli3]

I dont receive my msg of tchat and group..blue tiks don't all msg