Merge pull request #66530 from timothyqiu/navobs

scene/2d/navigation_obstacle_2d.cpp

@@ -134,7 +134,7 @@ NavigationObstacle2D::~NavigationObstacle2D() {
 }
 
 void NavigationObstacle2D::set_navigation(Navigation2D *p_nav) {
-	if (navigation == p_nav) {
+	if (navigation == p_nav && navigation != nullptr) {
 		return; // Pointless
 	}
 

scene/3d/navigation_obstacle.cpp

@@ -140,7 +140,7 @@ NavigationObstacle::~NavigationObstacle() {
 }
 
 void NavigationObstacle::set_navigation(Navigation *p_nav) {
-	if (navigation == p_nav) {
+	if (navigation == p_nav && navigation != nullptr) {
 		return; // Pointless
 	}