Torn Off Menus Move Around the Screen

The torn-off menus can be successfully docked to the side of a screen but not to the bottom or top. When I try to dock it there, it suddenly moves to a different monitor.

Also, if the menu is set to auto-hide, I often cannot get it to with the mouse, after invoking it from the toolbar. It disappears too fast, and I see no way to change that.

Also, even when docked to the side and set to Always on Top, it still appears below the windows of programs on the screen. It does not go on Top.