Different systems, same tray image. The icon display of the tray is different

[asfdnkw]

The tray icon in this picture is displayed normally. But when running the program on a different system, the tray icon changes to this.

Is there any way to make the icon adapt to the tray icon size.

[sblantipodi]

I think that it's a problem of GNOME returning the wrong icon size.
It returns an icon width/height of 24 pixels while it's using only 16.
Linux tray icons is a mess...