A few things I noticed tonight. On the death recap screen, the background behind the gems count is too small:
This might be by design, but I found that gems on the ground in the post-forest camp are kinda hard to see:
After going into a button challenge room, starting the challenge, then leaving the room before the timer expires, the challenge UI (timer and gem count) remained on the upper right corner of the play area until I quit the game.
Vert Laser Seed has a planting cost of 0 crystals? Is that by design? If so, there's a small grammatical error, as it says "Costs 0 crystal to plant".