1) start anjuta
2) open new document
3) type some lines, for example

1
2
3
4
5

4) place the cursor at the beginning of the document
5) enter the live-search-entry, and type "3"
6) click somewhere in the document window (maying the entry loose focus)

Crashes reliably here. Note that the entry is actually a EggEntryAction. Before the crash, the code asserts at GTK_WIDGET_HAS_FOCUS in blink_cb (gtk/gtkentry.c). The documentation in that function also says that when you connect a focus-out handler, you need to make it return FALSE for the signal to be propragated up. This isn't the case in EggEntryAction. The attached patches fixes the crash for me  (note that other signals might have the same problem, which just might not show up atm).