Was there a change in how storeowner permissions on mailboxes are displayed and set?
For shared mailboxes I had set "additional store owners" before on the "permissions" tab.

After I updated from gromox 3.8.9 to 3.10.51, I noticed that these permissions are not displayed on this tab anymore, but instead on the "folders" tab, the users now have the permissions "storeowner" and "freebusysimple".

So far all seems to work normal, but I'm wondering if this is intended and what is the background?