How do you disable the keyboard shortcut that closes ALL files open in group

How do you disable the keyboard shortcut that closes ALL files open in group.

I normally keep a lot of files open in Komodo Edit. Each file is nicely grouped in the “Open Files” panel by language (such as PHP, Latex, C, and so on). However, in recent versions (9.3) I am finding that somehow I am accidentally closing ENTIRE “groupings”. For example, if I am currently editing a PHP file, I am accidentally hitting a key sequence that closes ALL open PHP files. I believe it could be happening when trying to hit “Ctrl-S” to save. I do not loose changes, but it is frustrating to reopen all of them.

What keymapping does this? I looked through the long list and could not find one that may be the issue.