Occurred for me as soon as 3.4.6 was installed. Setting autohide to "never" circumvents the problem for me too.
When it is happening getting a continuous stream of messages like the following while running unity -d --replace from a terminall session: ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): CRITICAL **: bamf_view_is_sticky: assertion `BAMF_IS_VIEW (view)' failed (<unknown>:19773): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750729: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist (<unknown>:19773): GLib-GObject-WARNING **: instance of invalid non-instantiatable type `(null)' (<unknown>:19773): GLib-GObject-CRITICAL **: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist (<unknown>:19773): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed ** (<unknown>:19773): CRITICAL **: bamf_view_is_sticky: assertion `BAMF_IS_VIEW (view)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): CRITICAL **: bamf_view_is_sticky: assertion `BAMF_IS_VIEW (view)' failed (<unknown>:19773): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750732: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist (<unknown>:19773): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed ** (<unknown>:19773): CRITICAL **: bamf_view_is_sticky: assertion `BAMF_IS_VIEW (view)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): CRITICAL **: bamf_view_is_sticky: assertion `BAMF_IS_VIEW (view)' failed (<unknown>:19773): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist ** (<unknown>:19773): WARNING **: Failed to fetch view type at /org/ayatana/bamf/window37750735: Method "ViewType" with signature "" on interface "org.ayatana.bamf.view" doesn't exist -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/725213 Title: Unity Launcher exibhits major graphical glitches when using elementary gtk theme (egtk) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs