Fix re-baking meshes after prop data assing.

prop_instance.cpp

@@ -33,7 +33,11 @@ void PropInstance::set_prop_data(const Ref<PropData> &data) {
 
 	_prop_data = data;
 
+	if (_building) {
 		queue_build();
+	} else {
+		call_deferred("build");
+	}
 }
 
 Ref<Material> PropInstance::get_material() {
@@ -58,11 +62,7 @@ void PropInstance::queue_build() {
 }
 
 void PropInstance::build_finished() {
-	_building = false;
-
-	if (_build_queued) {
-		call_deferred("build");
-	}
+	call("_build_finished");
 }
 
 void PropInstance::_build() {
@@ -89,6 +89,11 @@ void PropInstance::_build() {
 }
 
 void PropInstance::_build_finished() {
+	_building = false;
+
+	if (_build_queued) {
+		call_deferred("build");
+	}
 }
 
 void PropInstance::prop_preprocess(Transform transform, const Ref<PropData> &prop) {

prop_instance_job.cpp

@@ -70,6 +70,10 @@ void PropInstanceJob::set_build_done(const bool val) {
 
 void PropInstanceJob::finished() {
 	set_build_done(true);
+
+	if (_instance) {
+		_instance->build_finished();
+	}
 }
 
 void PropInstanceJob::reset() {

prop_instance_merger.cpp

@@ -462,6 +462,10 @@ Don't submit here, as it starts in physics process mode
 
 void PropInstanceMerger::_build_finished() {
 	set_building(false);
+
+	if (_build_queued) {
+		call_deferred("build");
+	}
 }
 
 void PropInstanceMerger::_prop_preprocess(Transform transform, const Ref<PropData> &prop) {

prop_instance_prop_job.cpp

@@ -91,6 +91,7 @@ PropInstanceMerger *PropInstancePropJob::get_prop_instace() {
 }
 void PropInstancePropJob::set_prop_instace(PropInstanceMerger *prop) {
 	_prop_instace = prop;
+	_instance = prop;
 }
 void PropInstancePropJob::set_prop_instace_bind(Node *prop) {
 	set_prop_instace(Object::cast_to<PropInstanceMerger>(prop));
@@ -327,6 +328,7 @@ void PropInstancePropJob::_reset() {
 	_build_done = false;
 	_phase = 0;
 
+	_current_mesh = 0;
 	_current_job_step = 0;
 
 	reset_stages();