Move cursor to grid doesn't work anymore

I think I changed a setting, but I don’t know which setting:

When I move the cursor using the arrow l and R keys on my keyboard, the playhead cursor used to move according to the Grid type setting. (1/2 frame, 1/4 frame, subframe). But now it moves only 1 frame, regardless of what the Grid Type is set to. When I nudge an event it does move with the correct grid type.

It works correctly on my MacBookPro, but not anymore on my MacPro.

How and where do I change this behaviour?

I found it! For some reason, my key commands got messed up, setting the arrow keys to the wrong settings.