Push buttons should not hide windows, just bring them to front

I find useless the behavior of many push buttons that hide a window, when you could click the close button or press the close window shortcut instead. It looks pointless to hide a window that is already hidden by other windows. This is also true when working with separate windows like ZynAddSubFX GUI. When I click this kind of button, I would expect the related tool to be brought to front.

Start by tracing the push-button handlers for tools that use separate windows, including the ZynAddSubFX GUI, and inspect how those windows are currently hidden. Confirm the desired behavior across the affected buttons: clicking one should bring its related window to the front rather than hide it.

Written by the indexing model from the issue text.