(Version 3.0.1)
1. Selecting Window > Playlist after launch results in just the titlebar and the bottom play-bar. (I.e., there's no rectangular field to drag-n-drop files into.)
2. A dragged in .m3u playlist files begins auto-playing. (I'd rather it didn't.)
3. Saving an .m3u playlist file of xyz name will squash an existing playlist file of the same name without alert/confirmation.
4. The Mac OS (El Capitan in my case) won't recognize an attempt to set (via the Finder's select-file/right-click Get Info dialog) VLC as the default for opening .m3u files