title: Crashlytics not reporting crash with app bundle but working fine with apk
body: <p>Crashes aren't reported anymore on the crashlytics ( firebase ) console when I upload an app bundle of my app on the Play Store. 
  Strange thing :  if I release an apk it works fine.</p>
  
  <p>Do you have any ideas of what can produce this problem ? </p>
  
  <p>Thanks</p>