The bug

Selection boxes of options in some screens are offset in relationship to the text that is contained within them. These include:

• Languages (2 px lower)
• Statistics > General (2 px higher)
• Statistics > Items (2 px higher; the box is also way longer than necessary)
• Statistics > Mobs (2 px lower)
• Resource packs: not really misaligned, but they don't shrink when they there's a scroll bar at the right (unlike the "Incompatible" red box), causing the right edge to become hidden.