Poppy was a failure of a rework. Her gameplay is weaker and she herself is weaker for it.
The only positive thing to come out of this rework was the IDEA of the anti-mobility spell of hers, the Steadfast presence, but in execution it's pretty bad.
On every website that I've looked at that keeps track of winrates and matchups throughout patches, Poppy's been pretty awful when before she's always done well for herself in the jungle.
It feels like Riot crammed her kit full of counterplay and then made her weaker for it simultenously with things like her passive having to play a minigame to collect her shield and the Q changes, and the R changes. Just everything really.
It's been 20 days since the rework came out, and I've had about 100 games on her. She's feast or famine champ, and she's not even tanky. Her tanky passive on steadfast presence is NOT noticable.