Ring Doorbell bubbling at top of case

This is the second time my ring doorbell has bubbled up like this. Is this just the case, or is the battery doing this? Is it safe?

Hi @Matt28937. For your Doorbell’s cosmetic damage and any safety concerns, please give our support team a call at one of the numbers available here for further assistance. If you are outside of the US, please visit here to see how to contact support.