You can eliminate the chainring rub when crossed outer rear to inner front by increasing the chainring separation a bit. There are 0.6mm spacers sold for this purpose. Before you run out and order spacers, consider that the cure might be worse than the problem because excess separation can cause a narrow chain to hang up between the rings on down shifts.

If it's minor, and you don't expect to use the problem combinations, you're best off living with it. If it bothers you, try the spacers. Worst case scenario, it won't shift right and you'll remove them and be back where you started except out a few bucks and some time.