Background event do not light up watch screen on Venu 2

Hi,

I am developing an app, working on Venu 2 I encountered problem with background event. I am using simple background event with message and confirmation (open app/dont open app).

There is no problem with background event it works fine after some time confirmation dialog pops up and watch vibrates.
Everything works fine when Venu 2 screen is on (light up).
However when the screen is off and background event occurs, there is a vibration, but the screen do not light up. When I make gesture it still do not light up. Touching screen also do not light up the screen. Touch buttons and physical buttons work ok but I cant see the screen. Because button works I am able to decline or confirm, but I dont see displayed dialog. After confirmation or cancelaction finally watch lights up.
It looks like this dialog in some way blocks the screen.
I tested it on other apps from the store and encountered the same problem.
I can see that e.g. I receive a phone call screen lights up and I can see the dialog. So I hope there is a way to do this.
I would be really thankful if anyone knows how to solve this issue.