Godot Editor crashes on map re-build after modifying map with map siblings referencing map children via @export vars

[azur-wolve]

When have a FuncGodotMap on a scene, and the map has any sibling node with @export vars referencing child nodes of the map.
If build the map again and try to save Godot Editor crashes.

The cause is due to deleting some entities within TrenchBroom, so the "hierarchy" changes.

[RhapsodyInGeek]

This is expected behavior honestly, and not anything we can actually do anything about. You shouldn't have hard references to nodes in the map in any tool scripts (or any nodes for that matter) unless you can guarantee those nodes will exist. You'll need to work around it.