It is possible to place sugar canes in and under water on blocks they normally can grow on and when it's on a ledge. I have observed them growing in the water state, but not under water state.
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[Mod] turbo
Thank you for your report!
We're tracking this issue in MC-929, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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