Use 'Shift key' to control horizontal scrolling, only direct children of 'body' work

[JarvisChao]

Hello,

Like the title, it doesn't work when using 'Shift key' to control the horizontal scrolling of other elements except for the direct children of 'body'.

By the way, when using Windows, pressing the 'Shift key' does not even stop scrolling, but keeps scrolling in the y direction.

Thanks you