Yahoo doesn't delete all selected emails

[wysocki]

I have several email accounts set up on various ISPs. They all work fine but my Yahoo mail connection has an issue. Whenever I select several emails then delete them, the status bar shows each being deleted and they are removed from the list. But a few seconds later, some of them come back undeleted! If I delete them one at a time, they do actually delete.

[Christian]

What protocol do you use in PopMan?

[wysocki]

Like all the other accounts I'm using IMAP.
Server: imap.mail.yahoo.com
Port: 993
Username & Password