I often run PyCharm with a tool window floating on a different monitor than monitor containing the main IDE window. If I am in the IDE editor and type the hotkey for that tool window, this moves focus to the tool window.
In PyCharm 5, this action is making the tool window jump over to the monitor containing the main IDE window (away from the original monitor). In earlier PyCharm versions, the tool window would not jump to another monitor.
This behavior appears to be a bug. If this is designed behavior, can it be disabled?