Zyra's plants wont attack when silenced / Passive doesn't work when using trinket before death

Title says it all. As a main Zyra I find that very annoying not being able to use my passive in teamfights because of some weird interaction with my trinket item (and sometimes other things, even yesterday I tried to flash click on a thresh lantern , I died right before I could click on it then suddenly I just died without being able to use my passive)

Would be great if you could take a look at these bugs. Thank you in advance!