Perform export after import is fully complete

Previously command line export would go simultaneously with reimport,
which caused final package to either miss something or contain
outdated assets or perhaps even broken ones.

editor/editor_node.cpp

@@ -391,42 +391,6 @@ void EditorNode::_fs_changed() {
 		E->get()->invalidate();
 	}
 
-	if (export_defer.preset != "") {
-		Ref<EditorExportPreset> preset;
-		for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); ++i) {
-			preset = EditorExport::get_singleton()->get_export_preset(i);
-			if (preset->get_name() == export_defer.preset) {
-				break;
-			}
-			preset.unref();
-		}
-		if (preset.is_null()) {
-			String err = "Unknown export preset: " + export_defer.preset;
-			ERR_PRINT(err.utf8().get_data());
-		} else {
-			Ref<EditorExportPlatform> platform = preset->get_platform();
-			if (platform.is_null()) {
-				String err = "Preset \"" + export_defer.preset + "\" doesn't have a platform.";
-				ERR_PRINT(err.utf8().get_data());
-			} else {
-				// ensures export_project does not loop infinitely, because notifications may
-				// come during the export
-				export_defer.preset = "";
-				if (!preset->is_runnable() && (export_defer.path.ends_with(".pck") || export_defer.path.ends_with(".zip"))) {
-					if (export_defer.path.ends_with(".zip")) {
-						platform->save_zip(preset, export_defer.path);
-					} else if (export_defer.path.ends_with(".pck")) {
-						platform->save_pack(preset, export_defer.path);
-					}
-				} else {
-					platform->export_project(preset, export_defer.debug, export_defer.path, /*p_flags*/ 0);
-				}
-			}
-		}
-
-		get_tree()->quit();
-	}
-
 	{
 		//reload changed resources
 		List<Ref<Resource> > changed;
@@ -463,6 +427,42 @@ void EditorNode::_fs_changed() {
 	}
 
 	_mark_unsaved_scenes();
+
+	if (export_defer.preset != "" && !EditorFileSystem::get_singleton()->is_scanning()) {
+		Ref<EditorExportPreset> preset;
+		for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); ++i) {
+			preset = EditorExport::get_singleton()->get_export_preset(i);
+			if (preset->get_name() == export_defer.preset) {
+				break;
+			}
+			preset.unref();
+		}
+		if (preset.is_null()) {
+			String err = "Unknown export preset: " + export_defer.preset;
+			ERR_PRINT(err.utf8().get_data());
+		} else {
+			Ref<EditorExportPlatform> platform = preset->get_platform();
+			if (platform.is_null()) {
+				String err = "Preset \"" + export_defer.preset + "\" doesn't have a platform.";
+				ERR_PRINT(err.utf8().get_data());
+			} else {
+				// ensures export_project does not loop infinitely, because notifications may
+				// come during the export
+				export_defer.preset = "";
+				if (!preset->is_runnable() && (export_defer.path.ends_with(".pck") || export_defer.path.ends_with(".zip"))) {
+					if (export_defer.path.ends_with(".zip")) {
+						platform->save_zip(preset, export_defer.path);
+					} else if (export_defer.path.ends_with(".pck")) {
+						platform->save_pack(preset, export_defer.path);
+					}
+				} else {
+					platform->export_project(preset, export_defer.debug, export_defer.path, /*p_flags*/ 0);
+				}
+			}
+		}
+
+		get_tree()->quit();
+	}
 }
 
 void EditorNode::_resources_reimported(const Vector<String> &p_resources) {