Fixed in trunk, see r12504. It looks like a race condition between the elements being destroyed and the dialog list being cleared. When one item is cleared, it reorders the list (event) but of course all the other elements in the list have already gone. So it crashes.
Fixed in trunk, see r12504. It looks like a race condition between the elements being destroyed and the dialog list being cleared. When one item is cleared, it reorders the list (event) but of course all the other elements in the list have already gone. So it crashes.