Yes, normal key is a key down event when pressed and key up event when released.

Copilot key has different functionality AFAIK on different laptops / keyboards. It will fire several key down events followed by release events. When you let go it will not give any events.

Shortly, yes it behaves like a key combo pressed and released in some order.

Thus, there are several lengthy articles for workarounds.

And it is not standard procedure, unfortunately.