Hi, While working on native linux glass code I observed that requestFocus() is called before show(). If the window is not shown (mapped on Xorg), It can't be focused.
The code is on WindowStage.setScene() line 276. It might be the case when switching the scene, but should the window be focused in that case? If the user is "focused" on another window and the program decides to switch the scene the window would pop and steal the focus. Cheers.
