This may have started with the previous update but 4.19 was applied this morining and didn't help the issue.
Android 8.0.0 on Samsung A5-2017.
The notification bar constantly shows the Garmin Sync Service. Fair enough that the sync service may be running in the background but it should not show as a notification requiring action. Tapping on the notification opens Garmin Connect at the default page. Closing Connect results in the sync notification appearing again.