Running Weston under Weston's kiosk shell with multiple outputs causes the scrollback to go nuts

Hi

Trying to run weston --shell=kiosk-shell.so --output-count=2 --socket=test and then export WAYLAND_DISPLAY=test and weston --ouput-count=2 causes the client Weston to output lots of scrollback. Mostly [22:40:59.663] libwayland: This would previously accidentally suppress a follow-up dispatch[22:40:59.663] libwayland: Source dispatch function returned negative value![22:40:59.663] libwayland: This would previously accidentally suppress a follow-up dispatch[22:40:59.663] libwayland: Source dispatch function returned negative value![22:40:59.663] libwayland: This would previously accidentally suppress a follow-up dispatch[22:40:59.663] libwayland: Source dispatch function returned negative value![22:40:59.663] libwayland: This would previously accidentally suppress a follow-up dispatch[22:40:59.663] libwayland: Source dispatch function returned negative value![22:40:59.663] libwayland: This would previously accidentally suppress a follow-up dispatch[22:40:59.663] libwayland: Source dispatch function returned negative value! There are no line breaks. And it goes wild even after ending the server instance

Thanks.