ios calendar - Error in Hebrew Fast Days

iOS Hebrew dates Calendar is showing incorrectly that 7/2/15 is the Fast of 17th Tamuz (should be 7/5/15)

and that 7/23/15 is the Fast of 9th of Av (should be 7/26/15).

In both cases the error is due to the fact that the original date for the fasts is on a Saturday and the fast day is therefore moved forward. iOS is using an incorrect 'move it backwards' rule which does not apply to these fast days.