ARK: Survival Evolved

ARK: Survival Evolved

Additional Creatures 2: Paranoia!
cultivated Ya-te-veo phased down into the ground on placement.
killed a ya-te-veo, got the seed, all good so far. but when i went to place it, the plant decided to just sink down into the ground and continues to do so, as a result i cannot cryo it to save it. why is this happening to me?