I am not aware that PTC would have "already" addressed this problem. So for now all you can do is to find out by trial and error which keystrokes results in the desired action and live with the fact, that some actions can't be triggered at all by a keyboard short when you use a foreign keyboard (even though the help may state otherwise). The problem with the missing ability to insert the exponentiation character ^ using an Italian keyboard as reported by Italian users is extremely severe in my opinion.
I agree that making keyboard shortcuts user customizable would solve a lot of that kind of problems, but I fear that PTC has no plans to implement this useful feature.
