botany mutations broken :( :( :(

[Embolism]

Previously Omega Slurrypods are relatively easy to obtain as a random mutation. Now however it seems to never occur as a mutation (I planted about 50 Slurrypods with unstable mutagen, nothing) and it doesn't seem like it's based on potency either (someone had one up to 420 potency, nothing), so I assume it's just broken.