Seeking Shuriken (Ash augment) inconsistently removing armour

[VRKestrel]

Greetings fellow Tenno!

Lately I have noticed Ash's Seeking Shuriken Augment not working the way it is supposed to.

Every once in a while (I'm sorry I cannot be more precise than that) Seeking Shuriken will simply refuse to shred enemy armour. You can tell that it should have done so from the the green aura around the enemy (similar to a corrosive status effect) and the fact that attacks deal the same amount of damage before and after casting shuriken. 

This issue has been around for "a while" but it seems like it has occured more often recently than it used to. This has happened to me as both a client and a host of a group.

Increasing power strength well above the needed ~145% does not change anything.

I hope this gets acknowledged. 

Thanks in advance.