Shrinking Violet Bug

[Kidemax]

When a group of zombies right next to a shrinking violet are stunned by the gas cloud caused by the dazey chain, and a moving zombie entering the lawn comes into contact with the shrinking violet next to the group of stunned zombies, they are not shrunk. However, the zombie that was not stunned by the dazey chain gas cloud is successfully shrunk.

Does anyone else already know this?

[PowerToss]

It's mentioned on the wiki page and it's the same for Kernel-Pult, Iceberg Lettuce etc...so I'd guess it's intentional: https://plantsvszombies.fandom.com/wiki/Shrinking_Violet 

Zombies that have been stunned or frozen by Kernel-pult, Iceberg Lettuce, Stunion, or similar plants cannot be shrunk by Shrinking Violet. However, zombies that have been slowed down by plants such as Snow Pea, Winter Melon, Stallia, and similar plants can still be shrunk.