Object looks fine while designing in figma but "clips" when in preview/present mode?

I have this button, this is how it shows fully zoomed in while designing, as you can see no pixel is out of place; while this is how it shows when previewing/presenting. How can I fix this problem?

edit: to make you understand better, the black outline is one part of it (with nothing in the middle) and the colored green/red part the other part of it, placed below the outline