With multiple accounts which takes a few seconds to startup. When the folder list appears, if I select a folder which is highlighted (new mail), it is opened momentarily, then the open folder switches to the last folder which was open when I closed CM. Noticed this over time; but it was more obvious today as I was restarting CM several times to figure out what was eventually reported as bug 3705. Running 3.14.0-git107
The unexpected folder switch occurs at the end of mail checking. If user selects a folder during startup, block the auto-open.