I’m working with Android’s WorkManager and have two workers: WorkerA and WorkerB. WorkerA enqueues WorkerB from within its doWork() method.

Here’s the scenario I’m facing:

When WorkerA is enqueued for the first time, WorkerB executes normally. It finishes, returns a result, and WorkerA processes it, eventually finishing as expected.

When WorkerA is enqueued a second time, the state of WorkerB shows as “running,” but I don’t see any logs from WorkerB. It’s as though the worker is stuck or not executing its code.

However, when I close the app and restart it, WorkerB’s code executes, and logs appear.

What I’ve tried:

I ensured that WorkerB was properly enqueued in WorkerA using WorkManager.getInstance().enqueue().
Checked the logs for any errors but found none.
Questions:

Why might WorkerB not execute properly when WorkerA enqueues it the second time?
Why does restarting the app cause WorkerB to execute its code?
WorkManager setup:
Code of enqueuing WorkerA

                    OneTimeWorkRequest workRequest = new OneTimeWorkRequest.Builder(UCEMSCommissioningWorker.class)
                        .addTag("ucemsWorker")
                        .setInitialDelay(10000, TimeUnit.SECONDS)
                        .build();
                workManager.enqueueUniqueWork(UCEMSCommissioningWorker.class.getName(), ExistingWorkPolicy.KEEP, workRequest);
                Log.i("Recommission", "BLE Service UCEMS: startWorker: worker enqueued");
                workManager.getWorkInfoByIdLiveData(workRequest.getId()).observeForever(observer);

WorkerA enqueues WorkerB using WorkManager.enqueue().

            val data = Data.Builder().putString(
            "TAG_FROM_ACTIVITY",
            "UCEMS",
        ).build()
        val request = OneTimeWorkRequest.Builder(DeviceScanWorker::class.java)
            .setInputData(data)
            .build()

        workManager.enqueueUniqueWork("DeviceScanWorker", ExistingWorkPolicy.REPLACE, request)

Both workers are OneTimeWorkRequests.

WorkerA and WorkerB aren’t using UniqueWork.

Any insights into why this is happening and how I can fix it would be greatly appreciated!