There is no change in handling the Autobox plugin in version 14.0. The only thing that may affect something is Raspberry PI OS update. You can try to remove cache files of the pulseaudio located in /home/pi/.config/pulse directory and see if that changes something.
There should be files named e.g. 5ac1c21a15264f92a092aaf6ea586427-default-source, 5ac1c21a15264f92a092aaf6ea586427-default-sink, files with tdb extension and cookie file. Try to remove them all and restart Raspberry PI.
There should be files named e.g. 5ac1c21a15264f92a092aaf6ea586427-default-source, 5ac1c21a15264f92a092aaf6ea586427-default-sink, files with tdb extension and cookie file. Try to remove them all and restart Raspberry PI.