Transaction broadcast error: Permlink is not a valid size

I've raised a issue here: https://github.com/steemit/condenser/issues/3954

It seems the error is from steemd:

Here: https://github.com/steemit/steem/blob/main/libraries/chain/steem_evaluator.cpp#L852
and Here: https://github.com/steemit/steem/blob/main/libraries/chain/steem_evaluator.cpp#L50

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