particle editor troubles and crashes.

just upgraded to 5.4.0f3 from 5.3.6. love the new features on the particles editor.
But the randomness in particle emission seems to be broken. duplicating partcles always gives the same exact effect.
Also i get crash while working with particle systems containing sub emitters. Tested it with multiples computer on win10 or win7. the crash is

Did’nt see any posts about it. Is there any solutions other than downgrading to an older version ?
2744458--197846--ShurikenGoingCrazy.png

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We know about the randomness bug. A fix is on the way in a future patch. The crash does not sound familiar, could you file a bug report?

already filed a bug report under “(Case 821439) particle system make unity crash”
the crash is happening everytime we try to assign , edit or simply manipulate a particle system with a sub emiter …newly created.

Thanks. We will look into it