Ever since installing OS 10.12.6 beta 3, Apple Mail is giving me a lot of trouble when I try to download new messages from my Gmail acccount. More specifically, mail gets stuck downloading/moving messages, so that new messages are effectively never displayed. To be more precise, in the Activity window I get notifications like
Moving messages
1 of 6
Downloading messages
14 of 17
which never update.
Is anybody else experiencing this problem? I also would appreciate any suggestions as to how to fix it, short of recreating the account.