同一篇。
约一小时前有 Google 的员工回复了。
Hi Everyone,
This issue should now be fully resolved.
You may need to return to your Settings and
tick the Label Incoming Messages checkbox one more time.
It should now remain checked.
Thank you so much for reporting this and for your continued patience
while we worked to investigate the issue.
I understand how this might have seemed like a simple or quick fix,
but it was actually a very complex issue in which
we had to do multiple tests to fully resolve.
It was definitely a top priority as soon as we started receiving reports.
Again, we really appreciate your patience on this!
Thanks,
Jordan
大意上是说这个问题已经排除了，
未恢复的话重新设定一次就可以恢复运作。
有使用这个功能的版友可以尝试看看。
※ 引述《yukitowu (雪兔哥)》之铭言：
: 看起来似乎真的不太寻常。
: 今天 POP3 的自动标签设定又再度消失了，
: 我去 Gmail Help Forum 找了一下，
: 找到这篇，
: https://productforums.google.com/d/topic/gmail/LHMBWZnQEKA/discussion
: 有人回报了，
: 看来应该是 BUG 没有错，
: 虽然有人提出用 Filter 下条件来暂代，
: 但很明显的这并不能完全替代这个功能，
: 在 Gmail 团队修好前只能随时注意设定是否又消失了吧。