Exclamation mark to left on the notification glance? (iphone - ios 17.1.1)

Hi

My phone Device : iphone 15 (ios17.1.1)

What does it mean when there is a red exclamation mark (!) to the left of the summary in the notification glance?   (garmin connect close)

After opening Garmin Connect, it returns to normal

I believe I’m receiving notification as expected.

Other users with iPhone devices, have you encountered similar issues? Thank you.