I use Naver Line chat application and find out the problem on application.
I havr tried to find out the solution to the issue. I set up the notification in the app itself, set up my xperia xz to allow notification from Line, turn off Stamina mode.
Notification comes in only the first time there is new message coming. After that there is no notification anymore except the badge counter on the corner of the app icon, no sound, no notification LED, and nothing appears in the notification panel.
The only way to let the notification working again is to close the app in the task switcher. Anyway, notification seems to work only the first time the new nessage comes and then there is no nofication again.
I don't know if it is the bug of xperia xz launcher or the app itself. But the app seems to work very well on my other devices, Huawei P9 plus and SS Galaxy S7 edge.
Anyone know how to solve the problem.
