A8 neon flip cover only flashes a few times - is that how it should be?

[sbp]

Hi, I just bought a official A8 neon flip cover, and it flashes fine when i'm closing it.
When I receive a text-message (sms) it flashes a few times, but then it stops flashing - I was hoping that it would continue to flash until I have read the message.

So is it working as expected or do I need to adjust a setting somewhere in order to have it flashing longer?

 

[sciurius]

I have an A3 (2017) with neon cover and it behaves the same, so I assume this is intentional behaviour...