Automatic migration. Original reporter: "fedyakin"
getTextIndexFromPosition assumes that the editbox is not empty. This invariant is no longer true because the constructor doesn't (can't it appears) set the initial value of the editbox.
A simple workaround for the moment is to set the text in the layout file, or disable read-only editboxes.
Additional information: The relevant portion of the callstack is: CEGUI::MultiLineEditbox::getTextIndexFromPosition(const CEGUI::Vector2 & pt) Line 605 CEGUI::MultiLineEditbox::onMouseButtonDown(CEGUI::MouseEventArgs & e) Line 1100 CEGUI::System::injectMouseButtonDown(CEGUI::MouseButton button) Line 793