After updating to android@6.4.0 it creates apk in different directories and can't run on device anymore

I am facing this problem with Crosswalk after updating the platform to 6.4.0.

The apk files are created but as they are in different directory names the run took seems not to find them to run on device. Actually after the build itself they apk files are not listed anymore.

Ionic Info:

cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

global packages:

    cordova (Cordova CLI) : 7.1.0

local packages:

    @ionic/app-scripts : 3.2.0
    Cordova Platforms  : android 6.4.0 ios 4.5.5
    Ionic Framework    : ionic-angular 3.9.2

System:

    Android SDK Tools : 26.1.1
    ios-deploy        : 2.0.0
    ios-sim           : 6.0.0
    Node              : v8.11.3
    npm               : 5.6.0
    OS                : macOS
    Xcode             : Xcode 10.0 Build version 10A255

Environment Variables:

    ANDROID_HOME : /Users/francisco/Library/Android/sdk

Misc:

    backend : legacy

Plugins:

cordova-android-support-gradle-release 1.4.5 "cordova-android-support-gradle-release"
cordova-plugin-crosswalk-webview 2.4.0 "Crosswalk WebView Engine"
cordova-plugin-device 2.0.2 "Device"
cordova-plugin-ionic-keyboard 2.1.3 "cordova-plugin-ionic-keyboard"
cordova-plugin-ionic-webview 2.2.0 "cordova-plugin-ionic-webview"
cordova-plugin-splashscreen 5.0.2 "Splashscreen"
cordova-plugin-statusbar 2.4.2 "StatusBar"
cordova-plugin-whitelist 1.3.3 "Whitelist"

Command just to build (see the last part where should list generated apk files): $ cordova build android

Result:

BUILD SUCCESSFUL in 24s
70 actionable tasks: 10 executed, 60 up-to-date
Built the following apk(s):
(THERE ARE NO APK FILES LISTED HERE, IT SHOULD HAVE)

Crosswalk info:
        After much discussion and analysis of the market,
        we have decided to discontinue support for Android 4.0 (ICS) in Crosswalk starting with version 20,
        so the minSdkVersion of Cordova project is configured to 16 by default.

If I look in the directory structure inside the platform on the build folder the apk files are there, but inside subfolders, I think that's the problem: apk_files

Could anyone point any solution for this annoying problem? I really need to use Crosswalk because of Android 4.1+

crosswalk-project / cordova-plugin-crosswalk-webview

After updating to android@6.4.0 it creates apk in different directories and can't run on device anymore #238