diff --git a/src/tests/flows/externalResize.ts b/src/tests/flows/externalResize.ts
index 4d4e46f..ceb335f 100644
--- a/src/tests/flows/externalResize.ts
+++ b/src/tests/flows/externalResize.ts
@@ -25,9 +25,18 @@ tests.register("External resize", 1, () => {
     workspaceMock.createWindow(client);
     Assert.equalRects(client.frameGeometry, getTiledFrame(100), { message: "We should tile the window, respecting its desired width" });
 
-    client.frameGeometry = getClientDesiredFrame(110);
-    Assert.equalRects(client.frameGeometry, getTiledFrame(110), { message: "We should re-arrange the window, respecting its new desired width" });
+    function testExternalResizing() {
+        client.frameGeometry = getClientDesiredFrame(110);
+        Assert.equalRects(client.frameGeometry, getTiledFrame(110), { message: "We should re-arrange the window, respecting its new desired width" });
 
-    client.frameGeometry = getClientDesiredFrame(120);
-    Assert.equalRects(client.frameGeometry, getClientDesiredFrame(120), { message: "We should give up and let the client have its desired frame" });
+        client.frameGeometry = getClientDesiredFrame(120);
+        Assert.equalRects(client.frameGeometry, getClientDesiredFrame(120), { message: "We should give up and let the client have its desired frame" });
+    }
+
+    testExternalResizing();
+
+    setTimeout(() => {
+        // the concession has expired, let's test again
+        testExternalResizing();
+    }, 1000);
 });
diff --git a/src/tests/utils/extern/node.ts b/src/tests/utils/extern/node.ts
index 4b2f603..a858a21 100644
--- a/src/tests/utils/extern/node.ts
+++ b/src/tests/utils/extern/node.ts
@@ -1,3 +1,5 @@
 declare const process: {
     exit(code?: number): void,
 };
+
+declare const setTimeout: (callback: () => void, timeout: number) => void;