[OnePlus 6T  Questions & Answers] Vladimir Kravets:
Yes full wipe, today I've even flashed using recovery tool MsmDownloadTool to 9.0.11.. thought that may be problem with lock/unlock bootloader during fastboot flashing... Using MsmDownloadTool it not needed to unlock bootloader... But the problem still exists... My mind is blowing because I've really cannot understand why is happens...

ADB Debug had some issue which I'be found:

- Error::Cannot open the file /vendor/firmware_mnt/image/widevine.mdt errno = 13.

Using DRMInfo found that it uses L1 as should be, and from one of the docs (Google: Google_Pay_Security_Paper.pdf) found that GPay uses it which verion L1 or L3 is not clear but use

- Got such exception

14820 02-08 00:46:37.860 18914 18914 I AppCompatDelegate: The Activity's LayoutInflater already has a Factory installed so we can not install AppCompat's
14821 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: Failed to instantiate custom view inflater android.support.v7.app.AppCompatViewInflater. Falling back to default.
14822 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: java.lang.ClassNotFoundException: android.support.v7.app.AppCompatViewInflater
14823 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at java.lang.Class.classForName(Native Method)
14824 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at java.lang.Class.forName(Class.java:453)
14825 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at java.lang.Class.forName(Class.java:378)
14826 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.support.v7.app.AppCompatDelegateImpl.a(:com.google.android.gms@13283037@13.2.83 (100400-213828543):1)
14827 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.support.v7.app.AppCompatDelegateImpl.onCreateView(:com.google.android.gms@13283037@13.2.83 (100400-213828543):1)
14828 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at aoys.onCreateView(:com.google.android.gms@13283037@13.2.83 (100400-213828543):1)
14829 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at dij.onCreateView(:com.google.android.gms@13283037@13.2.83 (100400-213828543):3)
14830 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:780)
14831 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
14832 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
14833 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
14834 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
14835 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.policy.DecorView.onResourcesLoaded(DecorView.java:1912)
14836 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.policy.PhoneWindow.generateLayout(PhoneWindow.java:2647)
14837 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.policy.PhoneWindow.installDecor(PhoneWindow.java:2726)
14838 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.policy.PhoneWindow.getDecorView(PhoneWindow.java:2107)
14839 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.support.v7.app.AppCompatDelegateImpl.n(:com.google.android.gms@13283037@13.2.83 (100400-213828543):8)
14840 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.support.v7.app.AppCompatDelegateImpl.c(:com.google.android.gms@13283037@13.2.83 (100400-213828543):2)
14841 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at die.setContentView(:com.google.android.gms@13283037@13.2.83 (100400-213828543):1)
14842 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.google.android.gms.tapandpay.tokenization.SummaryChimeraActivity.onCreate(:com.google.android.gms@13283037@13.2.83 (100400-213828543 ):4) 14843 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.google.android.chimera.Activity.publicOnCreate(Unknown Source:0)
14844 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at dij.onCreate(:com.google.android.gms@13283037@13.2.83 (100400-213828543):6)
14845 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at nzp.onCreate(:com.google.android.gms@13283037@13.2.83 (100400-213828543):2)
14846 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.Activity.performCreate(Activity.java:7149)
14847 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.Activity.performCreate(Activity.java:7140)
14848 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1288)
14849 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3017)
14850 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3172)
14851 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
14852 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
14853 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
14854 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1906)
14855 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.os.Handler.dispatchMessage(Handler.java:106)
14856 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.os.Looper.loop(Looper.java:193)
14857 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at android.app.ActivityThread.main(ActivityThread.java:6863)
14858 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at java.lang.reflect.Method.invoke(Native Method)
14859 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
14860 02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

It's downgraded play services but the same issue on the latest one 15.0.90

and for me I see that

02-08 00:46:37.863 18914 18914 I AppCompatDelegate: at com.google.android.gms.tapandpay.tokenization.SummaryChimeraActivity.onCreate(:com.google.android.gms@13283037@13.2.83 (100400-213828543 ):4)

it related to services problem but I'm not sure if it's related to this problem, as I can see from logs it should be fallback for legacy....