Menus are not opening on hover or hidden behind other element (https://www.unrealengine.com/en-US)

UserOfOrion

Menus are not opening on hover or hidden behind other element.

Open https://www.unrealengine.com/en-US
Hover on menu items
No child elements

Menus open and child elements are visible.

Version 0.99.133-beta (WebKit 621.1.2.111.4)

Sequoia (15)