From dd4eb8bf6320faeebf2c9b3486f1f43050c5a507 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Tue, 17 Feb 2026 23:48:08 +0100
Subject: [PATCH] fix(cron): retry next-second schedule compute on undefined

---
 src/cron/service/jobs.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/cron/service/jobs.ts b/src/cron/service/jobs.ts
index 302ccefa25..e547ed9de4 100644
--- a/src/cron/service/jobs.ts
+++ b/src/cron/service/jobs.ts
@@ -138,7 +138,12 @@ export function computeJobNextRunAtMs(job: CronJob, nowMs: number): number | und
             : null;
     return atMs !== null ? atMs : undefined;
   }
-  return computeStaggeredCronNextRunAtMs(job, nowMs);
+  const next = computeStaggeredCronNextRunAtMs(job, nowMs);
+  if (next === undefined && job.schedule.kind === "cron") {
+    const nextSecondMs = Math.floor(nowMs / 1000) * 1000 + 1000;
+    return computeStaggeredCronNextRunAtMs(job, nextSecondMs);
+  }
+  return next;
 }
 
 /** Maximum consecutive schedule errors before auto-disabling a job. */