Hide fallback choices after loading

src/engine/JsonSerialisation.ts

@@ -587,6 +587,7 @@ export class JsonSerialisation {
     choice.originalThreadIndex = parseInt(jObj["originalThreadIndex"]);
     choice.pathStringOnChoice = jObj["targetPath"].toString();
     choice.tags = this.JArrayToTags(jObj);
+    choice.isInvisibleDefault = !!jObj["isInvisibleDefault"];
     return choice;
   }
 
@@ -605,6 +606,7 @@ export class JsonSerialisation {
     writer.WriteProperty("originalChoicePath", choice.sourcePath);
     writer.WriteIntProperty("originalThreadIndex", choice.originalThreadIndex);
     writer.WriteProperty("targetPath", choice.pathStringOnChoice);
+    writer.WriteProperty("isInvisibleDefault", choice.isInvisibleDefault);
     this.WriteChoiceTags(writer, choice);
     writer.WriteObjectEnd();
   }

src/tests/specs/ink/Choices.spec.ts

@@ -299,4 +299,21 @@ describe("Choices", () => {
       "I did have one interesting fact about bricklaying, if you don't mind me spending taking a fair bit of time to lay the groundwork for it."
     );
   });
+
+  // TestFallbackChoicesHiddenAfterLoad
+  it("tests fallback choices remain hidden after load", () => {
+    compileStory("default_choices");
+    context.story.Continue();
+
+    expect(context.story.currentChoices.length).toBe(2);
+    expect(context.story.currentChoices[0].text).toBe("Choice 1");
+    expect(context.story.currentChoices[1].text).toBe("Choice 2");
+
+    const savedState = context.story.state.ToJson();
+    context.story.state.LoadJson(savedState);
+
+    expect(context.story.currentChoices.length).toBe(2);
+    expect(context.story.currentChoices[0].text).toBe("Choice 1");
+    expect(context.story.currentChoices[1].text).toBe("Choice 2");
+  });
 });