Ned Deily added the comment:
This is due to a bug in earlier versions of Cocoa Tk 8.5.x, originally
documented in Issue11055. Unfortunately, Apple is still shipping such a
version in current versions of OS X. One solution is to install a newer
version of Tk 8.5, such as ActiveTcl 8.5.15 and
New submission from Adam Kimbrough:
I am on a Mac running Mavericks 10.9.4. Whenever I press shift+command+s to
save a file as a specific name, it opens two windows. But, if I "Save As"
through the button in the menu bar, it only opens one window.
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components: IDLE
messages: 224204
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