gradle-dependency-graph-generator-plugin: GenerateDependencyGraph task generates png with single app block (for project with flavors)

I have a AS 3.0 / Kotlin 1.2.21 / gradle 4.1 project with multiple dependencies with classical root and app project modules structure. Full list of dependencies:

dependencies {
    kapt "com.github.hotchemi:permissionsdispatcher-processor:3.1.0"
    kapt "com.hannesdorfmann.fragmentargs:processor:$fragmentArgs_version"
    kapt "com.github.bumptech.glide:compiler:$glide_version"
    kapt "com.google.dagger:dagger-compiler:$dagger_version"
    kapt "nz.bradcampbell:paperparcel-compiler:$paperparcel_version"

    compileOnly 'org.glassfish:javax.annotation:10.0-b28'

    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation project(':sinch-android-rtc-3.12.3')
    implementation('com.crashlytics.sdk.android:crashlytics:2.9.0@aar') {
        transitive = true
    }
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation "com.squareup.okhttp3:okhttp:$okHttp_version"
    implementation "com.squareup.okhttp3:logging-interceptor:$okHttp_version"
    implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
    implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
    implementation "com.squareup.retrofit2:adapter-rxjava2:$retrofit_version"
    implementation "com.android.support:appcompat-v7:$support_version"
    implementation "com.android.support:recyclerview-v7:$support_version"
    implementation "com.android.support:customtabs:$support_version"
    implementation "com.android.support:design:$support_version"
    implementation "com.android.support:support-dynamic-animation:$support_version"
    implementation "com.google.android.gms:play-services-maps:$playServices_version"
    implementation "com.google.android.gms:play-services-location:$playServices_version"
    implementation "com.google.android.gms:play-services-places:$playServices_version"
    implementation "com.google.android.gms:play-services-gcm:$playServices_version"
    implementation "com.google.firebase:firebase-core:$playServices_version"
    implementation "com.google.firebase:firebase-messaging:$playServices_version"
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
    implementation 'io.reactivex.rxjava2:rxkotlin:2.1.0'
    implementation "com.github.bumptech.glide:glide:$glide_version"
    implementation 'com.jakewharton:kotterknife:0.1.0-SNAPSHOT'
    implementation 'com.jakewharton.timber:timber:4.6.0'
    implementation "com.google.dagger:dagger:$dagger_version"
    implementation "org.igniterealtime.smack:smack-android-extensions:$smack_version"
    implementation "org.igniterealtime.smack:smack-tcp:$smack_version"
    implementation 'de.hdodenhof:circleimageview:2.1.0'
    implementation "nz.bradcampbell:paperparcel:$paperparcel_version"
    implementation "nz.bradcampbell:paperparcel-kotlin:$paperparcel_version"
    implementation 'com.hannesdorfmann:adapterdelegates2:2.0.1'
    implementation 'org.apmem.tools:layouts:1.10@aar'
    implementation "com.hannesdorfmann.fragmentargs:annotation:$fragmentArgs_version"
    implementation 'uk.co.chrisjenx:calligraphy:2.3.0'
    implementation "com.daimajia.swipelayout:library:1.2.0@aar"
    implementation 'com.facebook.rebound:rebound:0.3.8'
    implementation 'com.makeramen:roundedimageview:2.3.0'
    implementation 'com.github.chrisbanes:PhotoView:2.1.3'
    implementation 'com.android.support:multidex:1.0.2'
    implementation 'com.hannesdorfmann.mosby3:mvp:3.0.4'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.facebook.android:facebook-login:[4,5)'
    implementation 'com.romandanylyk:pageindicatorview:0.2.0@aar'
    implementation "com.github.hotchemi:permissionsdispatcher:3.1.0"
    implementation 'cn.aigestudio.wheelpicker:WheelPicker:1.1.2'
    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5'
    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5'

    testImplementation 'junit:junit:4.12'
    testImplementation 'org.mockito:mockito-core:2.12.0'
    testImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5'

    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
}

After running of ./gradlew :app:generateDependencyGraph, plugin outputs this graph, which has only app element.

I’ve tried to use 0.1.0 and 0.2.0-SNAPSHOT, the described issue happens for both of them.