Unable to print directly from Zoho Books

Unable to print directly from Zoho Books

The option exists to print directly from Zoho Books, and our office regularly uses that function in both estimates and invoices. However, we suddenly find that feature is not working. We must now download the pdf and then print it. Are you aware of this glitch? Is this an easy fix? 

Is it possible it's a browser compatibility issues? Thanks in advance for your feedback. 

Steve