Cannot send messages from matrix -> slack

[DerBeutlin]

Messages are transfered from slack to matrix successfully, but the other way round is broken.
Whenever I sent a message in matrix to slack I get a
Receive a read event from ourself
and the message is not forwarded to slack

[DerBeutlin]

I already regenerated config.json and slack-registration.yaml, still the same behavior

[coelebs]

I have the same behavior.

[wapsi]

Me too.