Weird screen flickering in Pokémon Sun?

I was just scrolling through my boxes and I noticed the top screen of my 3ds flickers when I have the cursor over my Brionne, but it immediately goes away when I scroll to a different Pokemon, then the screen flickers again when I go back to Brionne. Has anyone seen something like this in their games? It seems like a bug in the software as opposed to a hardware malfunction, but I don't know much about that kind of stuff so I'm not sure. I'm just curious if I should be worried about my screen or if I should just ignore what could be a minor bug.