Second black window with Snap

[Gabriel Retana]

When I run Snap a second black window appears and sometimes the camera image shows on this window
Terminal output
issei@samsung-gr ~> snap-photobooth
[_LOG_LEVEL_INFO 22:48:22.006202] Application.vala:155: Camera version: 0.2.0.1
[_LOG_LEVEL_INFO 22:48:22.006323] Application.vala:157: Kernel version: 3.16.0-57-generic
[_LOG_LEVEL_DEBUG 22:48:22.008950] Settings.vala:163: Loading settings from schema 'org.pantheon.snap.settings'
[_LOG_LEVEL_DEBUG 22:48:22.139954] [Gtk] Connecting to session manager
[_LOG_LEVEL_DEBUG 22:48:22.146661] SnapWindow.vala:214: camera found: video0
[_LOG_LEVEL_FATAL 22:48:22.151482] [GLib-GObject] g_value_set_pointer: assertion 'G_VALUE_HOLDS_POINTER (value)' failed
[_LOG_LEVEL_FATAL 22:48:22.151565] Snap will not function properly.
libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/i386-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_35
libva info: va_openDriver() returns 0
[_LOG_LEVEL_DEBUG 22:48:24.139424] Camera.vala:107: mode changed
[_LOG_LEVEL_WARN 22:48:34.122453] [Gdk] snap-photobooth: Fatal IO error 11 (Recurso no disponible temporalmente) on X server :0.