Currently seeing the following in the Logcat on emulators with an SDK lower than 28:
? I/zygote: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.View$OnUnhandledKeyEventListener" on path: DexPathList[[zip file "/data/app/com.ivanalvarado.template-N9bjt3pNL_Z3xr0lE27tEg==/base.apk"],nativeLibraryDirectories=[/data/app/com.ivanalvarado.template-N9bjt3pNL_Z3xr0lE27tEg==/lib/x86, /data/app/com.ivanalvarado.template-N9bjt3pNL_Z3xr0lE27tEg==/base.apk!/lib/x86, /system/lib, /vendor/lib]] ? I/zygote: at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93) ? I/zygote: at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379) ? I/zygote: at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312) ? I/zygote: at void androidx.core.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2559) ? I/zygote: at void androidx.appcompat.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:63) ? I/zygote: at java.lang.Object java.lang.reflect.Constructor.newInstance0(java.lang.Object[]) (Constructor.java:-2) ? I/zygote: at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:334) ? I/zygote: at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:647) ? I/zygote: at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:790) ? I/zygote: at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:730) ? I/zygote: at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:863) ? I/zygote: at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:824) ? I/zygote: at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:515) ? I/zygote: at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:423) ? I/zygote: at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:374) ? I/zygote: at android.view.ViewGroup androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:749) ? I/zygote: at void androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:659) ? I/zygote: at void androidx.appcompat.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:552) ? I/zygote: at void androidx.appcompat.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:161) ? I/zygote: at void com.ivanalvarado.template.MainActivity.onCreate(android.os.Bundle) (MainActivity.kt:34)
but it is a known Google bug.