CronQueue actions stuck in pending state

In 7.9, we are seeing CronQueue actions stuck in pending state forever. This is causing delays in data loads. Has anyone else noticed this?

We have messages on other queues but from my understanding queues are round robin. Not sure why only CronQueue messages are not being picked up by workers. In the below example, workers are picking up messages from MapReduceQueue but not from CronQueue.

EDIT: The 3 computing actions are long running actions and nothing new are getting picked up.

@venkata.paruchuri This would need to be investiaged on the actual system as the reasons could vary. What is the url?

Thanks @trothwein. I have slacked you those details.