Attachment.PLATFORM cause RESULT_CANCELED

STEPS TO REPRODUCE:
1. Remove installed apk
2. Android Studio debug reinstall apk
3. Press "Create(Platform)" button, which is for FIDO2 CREATE by on-device authenticator only
**3.1. Expected fingerprint prompt, some devices work fine, but others might not as well**
**3.2. The other devices which cannot work fine, after retry random times it'll work fine**
4. Press "Create(Cross-platform)" button, this is for FIDO2 CREATE by external authenticator only
4.1. Press "Create(None)" button, this is for FIDO2 CREATE by any authenticator
4.2. The above 2 button cause same WORK FINE result, it'll show the menu for user to choose which type of authenticator they want to use

EXPECTED RESULTS:
As above description 3.1

OBSERVED RESULTS:
As above description 3.2

Work FINE:
Asus Zenfone6: Android 10
Google Pixel 3: Android 11

NG:
HTC U11: Android 9
OPPO A3: Android 8.0.1
Samsung A8+: Android 9
Asus Zenfone3: Android 8

- Android app version if an app related issue:
compileSdkVersion 30
defaultConfig {
minSdkVersion 24
targetSdkVersion 30
}
implementation 'com.google.android.gms:play-services-auth:18.1.0'
implementation 'com.google.android.gms:play-services-fido:18.1.0'

More detail from Logcat:

2020-08-04 11:47:07.131 413-413/? E/Fido: [FingerprintUiHelper] Fingerprint authentication is not available
2020-08-04 11:47:07.132 413-413/? D/AndroidRuntime: Shutting down VM
2020-08-04 11:47:07.143 413-413/? I/GCore-Chimera-Crash: ChgKB2Fkc19mZHIQuL23ChiBAiCA56-OrwYKUwoJY29udGFpbm
VyEPjQzmAYQCCQopP_-zoqA3BheSoOdmlzaW9uLmJhcmNvZGUq
C3Zpc2lvbi5mYWNlKgp2aXNpb24uaWNhKgp2aXNpb24ub2NyCh
oKBm5lYXJieRCDx8HHBxiBAiCQibnToKzNAyAA
GCore-Chimera-Crash
2020-08-04 11:47:07.143 413-418/? I/art: Do partial code cache collection, code=59KB, data=61KB
2020-08-04 11:47:07.144 413-418/? I/art: After code cache collection, code=49KB, data=48KB
2020-08-04 11:47:07.144 413-418/? I/art: Increasing code cache capacity to 256KB
2020-08-04 11:47:07.146 413-413/? I/DeviceDrDatabaseHelper: Cleaning stale data from database!
2020-08-04 11:47:07.161 413-413/? W/DeviceDoctorHandler: Crash Hash: cd892641a62411098665ad95ac93c7c604ec07a8
2020-08-04 11:47:07.169 413-413/? W/DeviceDoctorHandler: Shushing crash.
2020-08-04 11:47:07.169 413-413/? E/DeviceDoctorHandler: FATAL EXCEPTION: main
Process: com.google.android.gms.ui, PID: 413
java.lang.IllegalStateException: Fragment already added: TmpXDialogFragmentProxy{b13b127} (3c415164-0f37-4294-957c-feb8a1738651) fragment_fingerprint_or_lock_screen}
at en.a(:com.google.android.gms@202614019@20.26.14 (040400-320008519):3)
at eh.f(:com.google.android.gms@202614019@20.26.14 (040400-320008519):1)
at eh.a(:com.google.android.gms@202614019@20.26.14 (040400-320008519):65)
at eh.a(:com.google.android.gms@202614019@20.26.14 (040400-320008519):9)
at eh.a(:com.google.android.gms@202614019@20.26.14 (040400-320008519):263)
at ea.run(:com.google.android.gms@202614019@20.26.14 (040400-320008519):0)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)

Reproduce the FIDO2 CREATE flow using the Create(Platform), Create(Cross-platform), and Create(None) buttons on the listed Android versions. Start with the Google Play services FIDO 18.1.0 behavior and the supplied logcat, especially the fingerprint UI exception; done means the platform flow no longer intermittently returns RESULT_CANCELED on affected devices.

Written by the indexing model from the issue text.