This matches the "Break on..." and makes it even clearer that you're supposed to click on one of the items in the submenu.
Created attachment 372290 [details]
Created attachment 372292 [details]
Created attachment 372293 [details]
[Image] After Patch is applied
Comment on attachment 372292 [details]
This goes against Apple's HI Guidelines (which I clearly didn't check before adding the "Break on..." context menu item). Here is the relevant documentation:
[Copied from https://developer.apple.com/design/human-interface-guidelines/macos/menus/menu-anatomy/]
Menu Item Titles
A menu item title describes an action or attribute.
Use an ellipsis whenever choosing a menu item requires additional input from the user. The ellipsis character (…) means a dialog or separate window will open and prompt the user for additional information or to make a choice.
I've put up a patch to address the "Break on..." menu item title: