Glitchyness on screen

Doesn't look like something to worry about, Xavier. Especially, because your Reference Console seems to have the same 'reflections' on its screen (it doesn't look like distortions to me, but that might be because of the screenshot).

You do appear to have some inconsistent Normals (on the buttons), but maybe that is something intentional.

What's weird though, is that part of your Bevel Modifier is greyed out..I wonder why that is.

Also the button is from a different shade than the other one. You may have duplicated faces causing Z fighting in there. You can select those parts and with G move them around to see if some are left behind, meaning you have faces stacked on top of another.