Particles died before lifetime ends

Good day!

I’m trying to make a very simple clouds with VFX Graph and have a problem with lifetime of the particles. Looks like be a some reason they dies before lifetime ends. And because of that I can’t get smooth fade out on particle lifetime end. It’s doesn’t matter how long lifetime I set it dies about a half way.

Here’s a video to illustrate the problem:

Graph:

What am I missing here?

Dunno if you have resolved this, but I was thinkin that is your alpha over life curve stretched to the effects lifetime?