Independently of the mod loader, the presence of Dye Depot seems to cause an IncompatibleClassChangeError crash in Botania v443. The crash happens specifically on start-up in the floating flower registration logic, but that's by far not the only place where the DyeColors enum is referenced, so it's probably just the first of several places to error out.

Logs:

• Fabric (just with Dye Depot and Botania and its dependencies)
• Forge (not sure how permanent this is, it was reported by a user on the Violet Moon forums)

We are also tracking this issue on the Botania issues list for reference: VazkiiMods/Botania#4589