Well....first the fact that others have the same problem does not make me feel any better. Second, it's not causing the entire world around me to cease to exist either. That said, one thing I found out. I have a S7 and immediately after the Oreo update last week I lost the message bubble. A few days ago I bought a S9 and it had Oreo already installed and funny thing.....anything to do with message notifications that didn't work on my S7 after the Oreo update works perfectly on the S9, so what does that tell me? The update is either compatible with the S9, designed for newer models such as the S9, OR just gave no priority, or not enough of one for the S7. I'm going with a mix of the former and the latter. Not sure why this is a S8 thread, since I typed in S7 Oreo issues, but hey......