Sharper corners cause a very small number of electrons to accumulate (DC) and/or vary under AC so they can "bend" the current just right to bend around the corner perfectly (
make
the corner so to speak.) But it's only a few. At high frequency AC that process becomes an EM radiator. But it's not going to matter much here. By the time it does matter, a lot of other things will also matter to complicate things. So your brain will be in a different place, anyway. You're fine.