What steps will reproduce the problem?
What version of the product are you using? On what operating system?
prosody-hg latest revision
prosody-modules latest revision
Thanks for the test, but I don't know how to run it.
Setting component to community since mod_smacks is not distributed with Prosody.
Look at the link, instructions to reproduce are there, in the top comment.
Tracked down and fixed in 0.11.7! Thanks to some pointers from the Jitsi team. Turned out to be a one-liner :)
Fixed in https://hg.prosody.im/trunk/rev/55d8612ac357