diff --git a/packages/app/src/i18n/relative-time.repro.test.ts b/packages/app/src/i18n/relative-time.repro.test.ts
new file mode 100644
index 0000000000..e6d35d417c
--- /dev/null
+++ b/packages/app/src/i18n/relative-time.repro.test.ts
@@ -0,0 +1,32 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { i18n } from "@/i18n/i18next";
+import { formatAge } from "@/git/pull-request-panel/data";
+import { formatCompactTimeAgo, formatTimeAgo } from "@/utils/time";
+
+// Reproduction for https://github.com/getpaseo/paseo/issues/6238: relative times stay English
+// when the app runs in another language.
+describe("relative times in French", () => {
+  const now = Date.UTC(2026, 0, 1, 12, 0, 0);
+  const sixHoursAgo = now - 6 * 60 * 60_000;
+
+  afterEach(async () => {
+    await i18n.changeLanguage("en");
+  });
+
+  it("translates the PR panel's own just-now key", async () => {
+    await i18n.changeLanguage("fr");
+    expect(i18n.t("workspace.git.pr.time.justNow")).not.toBe("just now");
+  });
+
+  it("words the PR panel activity age in French", async () => {
+    await i18n.changeLanguage("fr");
+    expect(formatAge(sixHoursAgo, now)).not.toBe("6h ago");
+    expect(formatAge(now - 20_000, now)).not.toBe("just now");
+  });
+
+  it("words the shared relative time in French", async () => {
+    await i18n.changeLanguage("fr");
+    expect(formatTimeAgo(new Date(sixHoursAgo), new Date(now))).not.toBe("6h ago");
+    expect(formatCompactTimeAgo(new Date(now - 20_000), new Date(now))).not.toBe("now");
+  });
+});