I use both webmail and Outlook desktop client to access my Gmail. I am normally looking at the All Mail folder on Outlook. Whenever I drag messages from the All Mail folder to the Trash folder on Outlook, these messages remain visible in the All Mail folder when accessed via webmail. Furthermore, when calendar invites are accepted using the Outlook client, they disappear from All Mail and go into the Trash folder, but when using WebMail, they remain in the Inbox. I have seen this disparity for years across different Outlook client versions and Windows versions. I also posted on the Gmail subreddit about a year ago.
Do others see this? How can this be corrected?
I am aware of the difference between Gmail's labels vs. Outlook's folders, but I would expect that Gmail does what is necessary to make the folders appear correct over the IMAP connection to Outlook. For example, if I drag a message from Outlook's All Mail folder to Trash, I see that message disappear from the Inbox folder after a short delay. Hence, the trashing of messages is registering on Gmail. It's just that the contents seem completely disconnected from what I see using webmail. All messages that were trashed in Outlook still appear in All Mail when accessed using webmail, even days later.