Change accessible-children-changed signal to children-changed; Removed default signal handler for focus-event
Change accessible-children-changed signal to children-changed;
Removed default signal handler for focus-event

GNOME/at-spi2-core,GNOME/at-spi2-core,Distrotech/atk,zsx/atk,GNOME/at-spi2-core,Distrotech/atk,collects/atk,collects/atk,zsx/atk,Distrotech/atk