DLP policy tips differ between Outlook desktop and OWA

Is it expected behavior that the policy tips we get in an Outlook desktop message are different than the policy tips we get in an Outlook web message?

We have a DLP policy set up for SSNs, targeting the Exchange location right now, and policy tips are enabled. I've attached images, but in Outlook desktop, we get two lines in the policy tip and in Outlook web we get four lines in the policy tip.

Please advise. Is this expected or is something wonky?