Thanks for integrating share options to the albums! Not being able to properly share single photos within albums was annoying!
However, I cannot seem to get the "Show Share Box" (Table II-B21) to auto-save. The clock icon when auto-saving and the green tick simply do not appear, and when I reload the settings page, I see that it is not enabled. I checked all related settings you mentioned in the changelog:
Messed with options in Table IX-E and Table IV-A, disabled AddThis... it just won't save. Maybe I'm missing something.