decoding events fails for indexed bytes

[cyberthirst]

boa version: 0.2.5

import boa

def test():
    loggy_code = """

a: Bytes[3]

event MyLog:
    arg1: indexed(Bytes[3])

@external
def foo():
    self.a = b"bar"
    log MyLog(self.a)
    """

    c = boa.loads(loggy_code)
    c.foo()
    c.get_logs()

test()

yields:

File "proj/titanoboa/boa/contracts/vyper/vyper_contract.py", line 739, in get_logs
    ret.append(c.decode_log(e))
               ^^^^^^^^^^^^^^^
  File "proj/titanoboa/boa/contracts/vyper/vyper_contract.py", line 769, in decode_log
    abi_decode(typ.abi_type.selector_name(), encoded_topic)
  File "proj/titanoboa/boa/util/abi.py", line 86, in abi_decode
    return _ABIDecoder.decode(_get_parser(schema), data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "proj/titanoboa/venv/lib/python3.11/site-packages/eth/codecs/abi/decoder.py", line 58, in decode
    return node.accept(cls, value, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "proj/titanoboa/venv/lib/python3.11/site-packages/eth/codecs/abi/nodes.py", line 44, in accept
    return fn(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "proj/titanoboa/venv/lib/python3.11/site-packages/eth/codecs/abi/decoder.py", line 204, in visit_BytesNode
    raise DecodeError("bytes", value, e.args[0])
eth.codecs.abi.exceptions.DecodeError: Error decoding '0x435cd288e3694b535549c3af56ad805c149f92961bf84a1c647f7d86fc2431b4' as 'bytes' - Data section is not the correct size

i think the decoding of topics might be messed up because we hash the bytestrings when used as indexed event args