Due to Dreamwood being registered as wood via Forge (I presume) in the base Botania mod (or this addon), it can be used with Pure Daisies to create Livingwood. With the long duration it takes to convert Elvenwood to Dreamwood, a player can leave their transformed Dreamwood next to a Pure Daisy for too long, resulting in it turning into Livingwood and the player having wasted resources and time.
I can't be sure this is a bug, but it certainly feels like at least an oversight.
Forge: 1.20.1 - 47.4.8
Botania: 1.20.1-450
Botanic Additions: 20.1.3