bbaldino already patched the source. If you do not want to compile it yourself you can wait for a next release to be installed with apt (on ubuntu).
As a tmp workaround you can wrap ffmpeg as I mentioned above on your jibri server (prob. ubuntu/debian?). Just put the two lines of code:
exec /usr/bin/ffmpeg (echo “@” | sed ‘s/44100/44100 -af aresample=async=1/’)
in the file
/usr/local/bin/ffmpeg (on your jibri server).
Make this file excutable for all:
chmod 755 /usr/local/bin/ffmpeg
systemctl restart jibri