neucoind: sendfrom doesn't allow me to spend an entire account

[haraldg]

$ neucoind listunspent
[
    {
        "txid" : "c81b2815cacd7e37d1d436b8c85a104eda00a882ce26969f051307fff09c7339",
        "vout" : 1,
        "address" : "Ng8V6A9XoWuoryrPm8SmFTc4tb5QannkZh",
        "account" : "ccbib-invest",
        "scriptPubKey" : "210353dfc679bcbdc3e30fb23df93c6783ece8337b79705fdbc1e503c612cf940c23ac",
        "amount" : 21183.75327900,
        "confirmations" : 2921
    }
]
$ neucoind sendfrom ccbib-invest NdgVrpAGwi5KVk5FkqnKyXe5EJFsFSzhFJ 21183.73327900
error: {"code":-6,"message":"Account has insufficient funds"}

Note that above I have left a margin of 0.02 NEU, which should be more then enough for the fee of 0.01 NEU ...

[haraldg]

After closer investigation it looks like sendfrom doesn't allow to spend stake rewards.