diff --git a/tests/domain/world-settings.test.ts b/tests/domain/world-settings.test.ts
index a5ad62b6..56b5d0ac 100644
--- a/tests/domain/world-settings.test.ts
+++ b/tests/domain/world-settings.test.ts
@@ -18,6 +18,9 @@ describe("world settings helpers", () => {
     expect(clone.sunLight.direction).not.toBe(source.sunLight.direction);
     expect(clone.advancedRendering).not.toBe(source.advancedRendering);
     expect(clone.advancedRendering.shadows).not.toBe(source.advancedRendering.shadows);
+    expect(clone.advancedRendering.whiteboxBevel).not.toBe(
+      source.advancedRendering.whiteboxBevel
+    );
   });
 
   it("switches a solid background into a gradient while preserving the authored color as the top edge", () => {
@@ -94,4 +97,13 @@ describe("world settings helpers", () => {
 
     expect(areWorldSettingsEqual(left, right)).toBe(false);
   });
+
+  it("treats whitebox bevel settings as part of authored world equality", () => {
+    const left = createDefaultWorldSettings();
+    const right = cloneWorldSettings(left);
+
+    right.advancedRendering.whiteboxBevel.enabled = true;
+
+    expect(areWorldSettingsEqual(left, right)).toBe(false);
+  });
 });