[OS X TeX] Custom keyboard shortcuts in texshop

[Themis Matsoukas]

I assigned command-D as a keyboard shortcut for Edit/Check Spelling While Typing in Texshop. The shortcut shows in the Edit menu but when I first launch TS and open a document, the shortcut is dead, i.e., TS beeps when I type it and nothing happens. If I click on the Edit menu once and then return to the TS document (without clicking anything else on the Edit menu), the shortcut comes alive and works for the rest of the TS session.  This behavior is reproducible upon quitting and relaunching TS.   Changing the shortcut to a different keyboard combination makes no difference. Any ideas why the shortcut does not work right away? I am on TS Version 2.37 (2.37). 

Themis