Celery tasks get blocked by SSE client

Question

I am running a SSE consumer in order to update a few tables like this

@app.task(ignore_result=True)
@worker_ready.connect
def xx_sse_nodes_uptime_info_consumer(sender, **kwargs):
   update_tables...

By some reason, other tasks are not triggered when we have a .delay calling other tasks. If I remove the task above, other tasks will work normally.

Also, when CELERY_TASK_ALWAYS_EAGER=True and CELERY_TASK_EAGER_PROPAGATES=True everything runs fine.

Since the SSE consumer uses stream=True the xx_sse_nodes_uptime_info_consumer never ends. I am not sure why this blocks others tasks tho as there are enough threads.