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Metacity Crashes When Using Surround SCM Integrations on Ubuntu
The Metacity window manager crashes or causes third-party applications, such as IntelliJ IDEA, WebStorm, and NetBeans, to become unresponsive or crash when using the Surround SCM integration on Ubuntu.
The following error may be displayed in the terminal:
'Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)'
The default Ubuntu theme enables overlay scrollbars, which can cause applications using Qt 4. x and 5.x, such as Surround SCM, to become unresponsive or crash. Refer to Ubuntu bug reports 805303 and 848808 for more information.
Use the following command to set the LIBOVERLAY_SCROLLBAR environment variable before using third-party applications.