Keyboard Shortcuts Result in Unexpected Behavior
Problem
In some rare cases, using certain keyboard shortcuts listed in the Menu Shortcut Keys preferences page result in something different than what is listed in that preferences page.
Cause
This is usually caused by the operating system intercepting the keyboard shortcut. For example, certain applications or hardware drivers intercept certain keyboard shortcuts by default. Another example is if you have multiple input sources configured, the operating system might intercept shortcuts if they match the ones used to change between the input sources.
Solution
Assign a different keyboard shortcut for the particular action in the Menu Shortcut Keys preferences page or refer to documentation for your operating system or hardware equipment to see if there are options to change the behavior.