Custom Event OnApplicationPause

I've discovered this post that was 2 years ago:
https://forum.unity.com/threads/cant-send-in-ondestroy-or-onapplicationquit.296657/#post-3192566
about events can be sent in any of the following places without issue (in Unity 5.4+).

But i notice that my custom events send through OnApplicationPause(true) is unreliable.
Sometimes it happens sometime it doesn't. I noticed it is always the last (true)'s custom event is not recorded in analytics.

Anyone encounter something similar?

I'm creating a custom event marker to record the Start time of my app and End time of my app. So that way i can also have the session length for each session.

So it goes something like this:

OnApplicationPause(bool status)
if (status) //If app is paused
{

Custom Event End​

}

if (!Status) //If app is not paused
{

Custom Event Start​

}

 

Correct, it's not advised to send events during app context switching or application quit. However, with that being said, you might want to look at FlushEvents https://docs.unity3d.com/ScriptReference/Analytics.Analytics.FlushEvents.html