Hi Juliano,
A possible reason the shortcut is not working is that the settings might have changed. Here is how to check and reset them:
Ensure that the keyboard settings are set to the “Windows default layout.” This can be checked by navigating to Home Tab >> Preferences >> MATLAB >> Keyboard >> Shortcuts as shown in the below image:
Resetting all shortcuts to their default settings is recommended. This can often resolve issues caused by accidental changes to shortcut configurations. If you have modified keyboard shortcuts and wish to revert to the default settings, click the 'Actions' button and select "Undo Modifications to Windows Default Set (modified)".
I hope this helps!