Just restored .claws-mail/ from backup, which fixed the problem. Then diff'ed the restored/fixed and the broken dirs, and found this:
mainwin_menubar=0 in clawsrc of the broken configuration. To re-iterate, I did nothing KNOWINGLY that changed this value. My best guess for a culprit is possibly an accidental drag'n'drop of something on the window by my lame touchpad. Clayton -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org