In the Outlook setup section for all our Mac (desktop) users we have changed the time zone to Mountain from the default on in Russia.
However, even though the mountain selection is what is displayed when returning to the options > settings > regional screen the changes don't
take effect. This can be evidenced by adding one of these participants to a meeting and their working hours show as from 2AM to 11AM
instead of 8 to 5 while in Outlook from a PC. However, if you add a mac participant from a mac, the time zone shows correctly.
The issue persists when I shut down their Mac and just try to update the settings via the web app (Office 365).
What am I missing?