-label:pinned works in Gmail but not in the Google Apps Script GmailApp.search() function?

Question

The following Gmail / Inbox By Gmail search returns everything in my inbox that is pinned.

in:inbox label:pinned

And this returns all unpinned inbox messages.

in:inbox -label:pinned

side note: Even though messages are "pinned" in Inbox By Gmail, and not Gmail, the search still works as expected in both web apps.

The following Google Apps Script logs only pinned emails.

function GetUnpinnedEmails() {
  var threads = GmailApp.search('in:inbox label:pinned');

  for (var i = 0; i < threads.length; i++) {
      message = threads[i].getMessages()[0];
      subject = message.getSubject();

      Logger.log(subject)
  }
}

However, the following Google Apps Script logs all inbox emails including pinned messages.

function GetUnpinnedEmails() {
  var threads = GmailApp.search('in:inbox -label:pinned');

  for (var i = 0; i < threads.length; i++) {
      message = threads[i].getMessages()[0];
      subject = message.getSubject();

      Logger.log(subject)
  }
}

GmailApp.search('in:inbox NOT label:pinned') also returns all inbox messages.

I think this is a bug but I thought I'd see if I'm missing something. Thanks.

Answer 1

No longer an problem. Google fixed the issue.
https://issuetracker.google.com/issues/64715312