Many cards/creatures are still broken after many months.
There are quite a few cards that I see regularly that are broken and have been for a long time.
I'm not sure if the developers have forgotten about them, or it just isn't a priority to get them fixed.
I figured I would start a list that people can add to.
Right off the top of my head I can think of two.
Vimpire - still gets +2/2 and comes back to life after dropping to zero health. - Seems to be working properly after the V1.10.14 update - Needs more testing.
Sgt. Strongberry - His special ability does not work most of the time. Woohoo - Fixed with the V1.10.14 Christmas update.
Evaporate - Can't be used after certain types of damage (possibly fixed?) - Needs more testing
Soul Patch - Insta-Blocks (an old mechanic taken out of the game before global launch) can happen when this plant is in play.
Please add more as you come across them.