WMR Tool Now Showing "Return Processing Delayed" Message with Tax Topic 152 - Should I Be Worried?

Been checking Where's My Refund almost daily and today the status looks completely different from what I saw last week. Getting nervous since its showing a message I've never seen before. When I checked the IRS2Go Refund Status today at 7:03, I noticed that instead of the normal progress bars or approval message, I'm now getting an unexpected message. The status is showing the three stages (Refund Received, Refund Approved, Refund Sent), but there's a long delay message now: "We apologize, but your return processing has been delayed beyond the normal timeframe. You can continue to check back here for the most up to date information regarding your refund. We understand your tax refund is very important and we are working to process your return as quickly as possible." Below that it also says: "Please read the following information related to your tax situation: Tax Topic 152, Refund Information" And there's another note: "Please Note: For refund information, please continue to check here, or visit the Refunds page on IRS.gov." The app still shows the navigation buttons at the bottom for Refunds, Payments, Free Tax Help, and Connect with a $ and ? symbols. Last week everything seemed to be progressing normally, and now this delay message has me worried. Has anyone else experienced this change? Does Tax Topic 152 mean there's a serious problem with my return? How long do these delays usually last? Anyone else experiencing this or know what it means?