Mail Issues (Copy/Move and Remove Attachments)

[jasnw]

Recently upgraded from El Cap to High Sierra (clean install) and I'm noticing a glitch in the Mail app (I use a Gmail account and POP3). Pre-HS upgrade when I moved (or copied) a mail message from one mailbox to another, if I then right-clicked on another message I was given the option in the drop-down menu to move (or copy) that message to the same mailbox as the previous action. Very useful. Now post-HS this works about 10% of the time, max. Either there is no menu item to repeat the last action, or the action give is to move or copy the message to some other mailbox not involved at all in the previous action. Anyone seen this and hopefully know how to fix?

 

[jasnw]

Adding another problem with Mail that came up post-HS. I often want to delete attachments to email by using the Message->Remove Attachments menu item. This always worked until now. Under High Sierra this option is greyed out and unusable over half the time I want to use it. Never had this happen before. I've seen other posts on a variety of sites about this problem, and nothing suggested works (although I haven't tried the ever-popular "reinstall High Sierra and see if it works this time"). Anyone found a fix for this?

Note that this is a separate problem than the first one I posted.