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Mobilna Banka GO(hr.asseco.android.jimba.mUCI.si): app stopped working after update to 0.19

  • Third party app iconicon
  • /e/ version: 0.19-20211027142972 (e_FP3-userdebug 10 QQ3A.200805.001 eng.root.20211027.184504 dev-keys,stable-release)
  • Device model(s): FP3 (FP3+, bought from eSolutions.shop)
  • Device rooted: no

Summary

The online banking app crashes when I either enter the PIN number to unlock it, or when I try to activate the app with the bank – so in both cases during authentication.

What happens is that the screen flashes white and then returns to the welcome screen of the app. And if I do that a few times, I am greeted with the “your app is regularly crashing, do you want me to kill it” system pop-up.

The problem

Steps to reproduce

  1. start the app ↦ landing screen
  2. enter app PIN when prompted
  3. screen flashes white
  4. back to landing screen

What is the current behavior?

I get back to the landing screen of the app, and if I try doing this several times, I get a system pop-up saying the app constantly crashes.

What is the expected correct behavior?

The banking app not crashing, so I can use it.

When it works and not

  • the above/current app version works fine on /e/OS 0.18 – this is why I suspect the bug occurs with a combination between the app and OS versions and how 0.19 might have introduced a regression in this context
  • there were some combinations of /e/OS and app versions that worked in the past and some that did not – I did not keep notes, unfortunately. OTOH:
    • an older version of app worked on /e/OS 0.16, but did not work on 0.17
    • the current version of app does not work on /e/OS 0.17 (I think…)

FAQ of what did not work

  • restarting the phone
  • deleting cache, storage and app and reinstalling it anew
  • (I am also in contact with the app’s IT support, but so far nothing new)

Technical informations

Relevant logs (adb logcat)

logcat_2021-11-08T23_26+01_00.log

Solutions

Workaround

Not necessarily a workaround, but oddly enough if I enable the Interactive Report in the developer tools, then the app does not crash on PIN entry (it may crash later though).

Possible fixes

The same version of the app worked fine on /e/OS 0.18. So I suspect what triggers it is something that changed from 0.18 to 0.19.

Edited by Nicolas Gelot