Using Project Starter solution at MAC, there is an button that Send Email to all Personnel at project or tasks.
This button has in its default setup:
Client: E-mail Client (MAIL)
to: List (Personnel::Complete Email Address)
This List function should include at (TO:) e-mail all non-repeating email address regarding all tasks and its registred personnel.
Consider that you have a Project with 4 tasks as:
Task 1 - Personnel - firstname.lastname@example.org
Task 2 - Personnel - email@example.com
Task 3 - Personnel - firstname.lastname@example.org
Task 4 - Personnel - email@example.com
It means that as soon as you press Email button, MAIL opens and include at TO: field , just 2 email address.
At MAC it includes all of them, it means 4 emails (2 x john and 2 x mary)
At iPad and iPhone it includes just 2 of them (1 x john and 1 x mary) as expected.
Is there any suggestion how to solve this issue?