XMPP ejabberd SaaS Push Notifications
问题 This is an update to my previous question, XMPP push notifications causing problems. Thanks to the answer from Mickaël Rémond delay and duplication issues are gone but I still fail to understand the behaviour of push notifications. If I move the app to background (without locking device or termination) it won't receive any push notifications, and when I bring it back to foreground all the messages are received perfectly. When the app is in foreground and I lock the device, no notifications