[BUG] Repackaging App with Adaptive Icons shows Stock Android Icon about apktool HOT 4 OPEN

Do you have a small sample of the AndroidManifest file decoded, then built/decoded again? To see the icon section.

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Honestly don't know if this will help, but:
base.apk: AndroidManifest.xml:

<application android:appComponentFactory="androidx.core.app.CoreComponentFactory" android:extractNativeLibs="true" android:icon="@mipmap/launcher_icon" android:isSplitRequired="true" android:label="@string/app_name" android:name="<removed name>" android:requestLegacyExternalStorage="true" android:usesCleartextTraffic="false">

** pre/post rebuild shows the same output.
base.apk: The launcher_icon.xml in res/mipmap-anydpi-v26

<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon
  xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@null" />
    <foreground android:drawable="@null" />
</adaptive-icon>

The foreground and background images for the launcher icon is in split_config.xxhdpi.apk, but looking through them I wasn't able find any file similar to the "launcher_icon.xml" file in base.apk.

Also, I tried switching out the "@null" to the appropriate paths for the fore/background images, but that also didn't work.
Finally, I forgot to mention but the app is built with Flutter

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Thanks - So I'm guessing the adaptive icons are in the split application? Since I don't see how Apktool would null out the drawable refs unless the resource is not valid in that specific application.

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Yup. The adaptive icons are in the split apk (split_config.xxhdpi.apk). Im starting to think that it is because the application is built with Flutter

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