I updated to Monterey 12.6 today (from the previous version) and have sure detected some bugs already. Many items I had in my Safari reading list (including articles about the features of the new versions of macOS and iOS) are gone. Mail is doing strange things at times. I read about the new feature whereby if you send an email and don't get a response after a "few days" it will put the email you sent back in the inbox. Not sure that is a good idea, but I sent an email, did get a response and it still put what I sent back in the inbox (in a strange place.) I received one email today and when I opened it on this iMac, it was completely blank. (It appeared completely normal on my iPhone.) But when I went to reply it then presented what the sender had said under the area where I was to add my reply (i.e normal behaviour for the reply, even if the origionally received email was blank. Early days yet... I wonder what else I will discover?