Windows Mail App does not work with Gmail accounts

I have similar experience. F.e. GMail messages which are unread and AT FIRST appear in Mail App's "unread" filter in "All Mail" folder can be made to utterly disappear simply by moving them from one folder to another within the Mail App. After the move, they are not anywhere in the Mail App, even though the changes will be reflected correctly in GMail via browser interface. It's like the messages get "old" and lose their "hotness" -- changes to message attributes (label, folder, read/unread, flag) are not synched to them by Mail App unless the message is ARRIVING at the time of the change to the attribute. So, absent the message being identical to its arrival state, it is a non-message, and the Mail App no longer sees it.

Personally, I like to keep incoming mail messages in my In-Box until I have acted upon them. So, I'll generally have four or five messages sitting in the In-Box, unread, for a while. With any other mail app, this is fine; they sit there. With Microsoft Mail App, they disappear. Next time I log in, they aren't seen by the Mail App any more, and I don't know what or where they are. I left them there as a reminder, so I wouldn't have to remember them, I don't know what their contents are, and therefore I cannot search for them by content. I had a job to do; Microsoft hid it from me permanently, and quite effectively; now it won't get done.

There are plenty of other symptoms. The culprit seems to be, that the "folder" concept (used by most conceivably normal email systems) versus the "label" concept (used idiotically by GMail alone for very little good reason except that they like to push us around by demanding we change our thinking habits) are contradictory in some manner or other. Most IMAP setups should be able to handle GMail's "label" concept but evidently Microsoft Mail App cannot do it, and instead of showing messages that it knows are there, it hides them.

This is un-tenable. Microsoft Mail App ought to handle the simplest of GMail messages, but it cannot. I ought to be able to replicate my GMail folders either on a web browser or, via IMAP, in the Mail App, but I cannot, because Microsoft cannot handle GMail's "label" concept (or, differently put, because GMail's "label" concept conflicts with most email systems' assumptions about labeling and foldering).