Ionic splash sreen delay and white screen after splash

[Nexi]

Here you find many threads discussing that topic:
https://forum.ionicframework.com/search?q=splash%20screen%20category%3A18

Try:
<preference name="SplashScreenDelay" value="30000" />

Found here:

After splash screen, display white screen long time

Hello everyone! I read every post in this topic, try every solution and link to articles, try with and without crosswalk, try on cordova-android 6.3.0 and cordova-android 7.0.0 and still has an issue. On IOS devices and android 4.2.2 real device all works fine, but on android 6.0.1 / 7.0.0 / 7.1.1 / 8.0.0 real devices not work fade out animation at all and during change from splashscreen to view I have a white screen blink during 1 second. Here is my topic with config. I also try --prod and --…