Something isn't working as intended. (eg. Zyra's Plants Thorn Spitter and Vine Lasher.)

Zyra's plants are not targeted skills. Zyra's plants (Thorn Spitter and Vine Lasher) are autonomous pets. Shaco's jack-in-the-box are also autonomous pet.

I have tested both champions in practice tool: with Shaco's jack-in-the-box and Zyra's Plants from her W or Passive; turned into Thorn Spitter or Vine Lasher; when attacking enemy champion --

Zyra's Thorn Spitter and Vine Lasher are drawing minion aggro onto her when it should not. Shaco's jack-in-the-box did not draw minion aggro onto him.

Riot needs to fix this! This problem is still current in patch 8.15.