Dock icon shouldn't be visible when window is closed

[dainnilsson]

When the application is closed to the taskbar, the dock icon shouldn't be displayed. For some OSes/Display Managers it is.

Confirmed working as intended:

• Windows
• XFCE

Confirmed not working:

• OS X
• Unity

[dainnilsson]

Food for though: Simply pinning the application to the dock and not using the systray icon seems to be a more encouraged approach by most modern desktop environments. Perhaps a reasonable "solution" would be to change the default to prevent using a systray icon and recommending this approach instead. Since the systray icon serves only to re-open the application it doesn't really offer any benefit over using it from the dock.

[dainnilsson]

This is what we ended up doing, closing.