trying to send a transaction with one 2500 satoshi  output (P2PKH), one P2PKH input and one op_return output with 2500 satoshi fee.  Won't send in sendrawtransaction RPC on bitcoin-qt 11.2.

Get "dust" error.  I thought the minimum output was much lower than 2500 satoshi.

Is this a bug or or something else? What am I missing?

using bitcoinjs-lib to build transaction.