Using multiple chart instance seams to lead to memory leaks (?)

[jzy3d]

JOGL warnings say:

X11Util.Display: Shutdown (JVM shutdown: true, open (no close attempt): 54/54, reusable (open, marked uncloseable): 0, pending (open in creation order): 54)
X11Util: Open X11 Display Connections: 54
X11Util: Open[0]: NamedX11Display[:0.0, 0x7ccff2c8, refCount 1, unCloseable false]
X11Util: Open[1]: NamedX11Display[:0.0, 0xffffffffb76f4cf8, refCount 1, unCloseable false]
X11Util: Open[2]: NamedX11Display[:0.0, 0x790ff1b8, refCount 1, unCloseable false]
X11Util: Open[3]: NamedX11Display[:0.0, 0x78dff1b8, refCount 1, unCloseable false]
X11Util: Open[4]: NamedX11Display[:0.0, 0x77fff1e8, refCount 1, unCloseable false]
X11Util: Open[5]: NamedX11Display[:0.0, 0x770f6518, refCount 1, unCloseable false]
X11Util: Open[6]: NamedX11Display[:0.0, 0x77f12e60, refCount 1, unCloseable false]
///