I am also seeing this new behaviour for an exported cordova app. Not when running in preview though.
First layout = "Loader" (my own loading screen)
Use loader layout = Yes
Loader style = Nothing
Previously the exported app started with my loader layout. Now it starts with the App logo, and Whita background(!). Even though Splash color is set to black in the properties.
In the Icons folder I only have one file, the app icon.
How can I turn off the "logo screen" ? (Like it has always wokred before)