My apologies if this is the intended behavior.

The recipe built into the mod for the cinnamon sapling has perhaps two typos (?) in its output items:

1. expandeddelight:cinnamon_stick doesn't exist, so that entry is skipped when the recipe is loaded. Should be expandeddelight:raw_cinnamon?
2. The log is set to minecraft:oak_log. Should be expandeddelight:cinnamon_log?

Here is a working version of the recipe that drops cinnamon sticks and cinnamon logs:
cinnamon.json

Anyone else running into the same issue can override it in the meantime by including this recipe in a datapack, in the data/expandeddelight/recipes/botanypots/crops directory.

I tried to expandeddelight for the first time today.
After searching for a long time, I finally found Cinnamon and discovered this "feature" or "bug". Thank you very much for your solution.