UICorner isn't mature yet

The first thing UICorner doesn’t have is choosing specific corners to round, to fill this gap, we use child frames to put them in corners to hide specific round corners, but when making fade-out animation then overlapping frames will be visible that doesn’t look good.

The second thing is we can’t clip descendants even if we want to. I would like to make the animated background pattern but can’t because the parent frame has round corners


came here just to express how much this fact makes me want to cry and still doesn’t happen this long later