Unreal Engine 4.18.3
Pack project for Android ETC2, apk is ready, installing and launching apk on Mobile phone with Android 5.11. In main menu background materials not show (screen is white), simple choosing play map in menu, map is loading, but geometry and materials not show (invisible), but standart skybox and sky materials is rendered.
Why main menu background materials is not show and fully builded level props is not rendered.
android-ndk-r15c
android-sdk-windows
CodeWorksforAndroid
gradle-2.9
jdk1.8.0_77
UPDATE:
In Menu Widget used simple PNG imported texture, not material. When launched game menu is white textures.
Levels loaded, but props meshes is graytextures, materials on props in editor window is good.