[4.2.0.21] [XA2] Wrong / No contact opened when trying to edit phone number of contact (via People App)

REPRODUCIBILITY (% or how often): 100% for certain contacts
BUILD ID = OS VERSION (Settings > About product): OS 4.2
HARDWARE (XA2, X10, X10 II, …): XA2 Plus - Dual Sim
UI LANGUAGE: English
REGRESSION: (compared to previous public release: Yes, No, ?): Yes - i had the same problem with 4.1

DESCRIPTION:

First problem: when i try to edit the phone number of a contact via the “Edit” context menu - nothing happens.

Second problem: why i try to edit the phone number of a contact via the “Edit” context menu - i get to the details dialog of a completely different contact that has nothing to do with the other contact.

PRECONDITIONS:

I have only contact from the phone - no synchronization with some address books from other servers / backends.

STEPS TO REPRODUCE:

First problem:

  1. Open People App
  2. Select a contact
  3. Select contact phone number for editing → Nothing happens.

Second problem:

  1. Open People App
  2. Select a contact
  3. Select contact phone number for editing → Details dialog is opened but for a completely different contact

EXPECTED RESULT:

First problem: Details Dialog for editing phone number of contact is opened
Second Problem: Details Dialog of the correct contact is opened to edit phone number

ACTUAL RESULT:

ADDITIONAL INFORMATION:

If you need more information, tell me, but please provide information how to get the additional data.