Shortcut triggers the wrong action, how to reset it to default?

Problem

Example: when using IntelliJ IDEA 2025.2 on macOS, pressing Ctrl+D triggers the debug action. This is encountered despite Ctrl+D typically being assigned to other functions such as "Duplicate line" on the default macOS keymap.

Cause

The Ctrl+D key combination may have been inadvertently reassigned in the keymap settings to trigger the "Debug" action (for example, by a third-party plugin).

Resolution

1. Open IntelliJ IDEA.
2. Navigate to File | Settings | Keymap.
3. Use the 'Find Action by Shortcut' feature to search for the action currently assigned to "Ctrl+D".
4. If it is assigned to "Debug":
   • Right-click on the "Debug" action in the search results.
   • Select Remove Ctrl+D to unassign this shortcut.
5. Optionally, reassign Ctrl+D to its original or desired action, such as "Duplicate line" by searching for this action and assigning the shortcut.

This will restore the expected functionality of the Ctrl+D shortcut.

See also

General guide to troubleshoot problems with keyboard shortcuts