I implemented UNNotificationServiceExtension to attach image thumbnail on push notification. (By using UNNotificationAttachment).
It works really well on iOS 13. But after updating to iOS 14, it is not working though.
There is no thumbnail image on push notification, but if I do "force touch" action on notification, then image shows up. That means image is downloaded well in temp directory.
Also changing title, subtitle, and body are works well even on iOS 14, only except for UNNotificationAttachment.
Are there any changes on notification service extension?
SOLVED
After rebooting device, it works very well..