OSMC and zeroconf

After the update of april 16, it is no longer possible to get access to shared volumes formatted with ext4 and connected to a mac (Yosemite or elCapitan, with extensions to work with ext4) via zeroconf. The mac is listed when choosing zeroconf in the ‘add source’ part, but no shares belonging to it are shown.
Is that a bug - I could wait - or a new feature for whatever reason?
Shares on my synology NAS are still shown as before the above update.