in version 0.0.12, with the Create Flavored modpack placing crate is bugged, and you can't open it, there are some cases where it places properly but mostly it doesn't, I tested druidcraft alone and it worked normally, I don't know which mod is incompatible:

I'm haveing the same issue, could you share your list of mods so i may compare

having the same issue too! would love a fix, also when i first opened one and closed it out it stopped my Aternos server.