I forgot to mention that I think I was able to save a relevant stacktrace from the last bunq crash. Maybe this is of use for the developers?
KeyStore exception
android.os.ServiceSpecificException: (code 7)
at android.os.Parcel.createException(Parcel.java:1956)
at android.os.Parcel.readException(Parcel.java:1910)
at android.os.Parcel.readException(Parcel.java:1860)
at android.security.IKeystoreService$Stub$Proxy.get(IKeystoreService.java:786)
at android.security.KeyStore.get(KeyStore.java:195)
at android.security.keystore.AndroidKeyStoreSpi.engineGetCertificate(AndroidKeyStoreSpi.java:144)
at java.security.KeyStore.getCertificate(KeyStore.java:1120)
at com.bunq.android.security.FingerprintDelegate.d(FingerprintDelegate.java:355)
at com.bunq.android.security.FingerprintDelegate.a(FingerprintDelegate.java:248)
at com.bunq.android.security.LoginTokenFingerprintDelegate.a(LoginTokenFingerprintDelegate.java:109)
at com.bunq.android.ui.activity.RememberedUserLoginActivity.e(RememberedUserLoginActivity.java:769)
at com.bunq.android.ui.activity.RememberedUserLoginActivity.c(RememberedUserLoginActivity.java:553)
at com.bunq.android.ui.activity.RememberedUserLoginActivity.onCreate(RememberedUserLoginActivity.java:439)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:495)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
This is in Android P btw.