Contact groups deleted by GoogleContacts on phone storage adressbook still visible in FossifyContacts

[ZarVladimirII]

Checklist

• I can reproduce the bug with the latest version given here.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected app version

1.6.0

Affected Android/Custom ROM version

Android 11 / but likely not depending on

Affected device model

Motorola One Hyper

How did you install the app?

F-Droid / IzzyOnDroid

Steps to reproduce the bug

1. Create a group in device storage adressbook (After restoring Contacts on this device, groups were created inside the phone storage adressbook.)
2. Remove group using GoogleContacts from device adressbook (To remove them I re-activated the GoogleContacts-app and choose the Device adressbook then deleted the not needed group labels/names)
3. re-boot the device

Expected behavior

When a group label/name is removed from any adressbook by other apps, for fossifyContacts it is also removed.

Actual behavior

When a group label/name is removed from phone storage adressbook by other app (GoogleContacts) for fossifyContacts it still exists.
Maybe happens for other adressbook entrys too.

Screenshots/Screen recordings

List with faulty (multiple) entrys

Group list in GoogleContacts from device storage with unwanted groups

Look after deleting in GoogleContacts

Look after deleting in FossifyContacts

Additional information

After re-boot, deleted group labels/names in the Google-Account adressbook did not show up anymore in FossifyContacts, though only after the re-boot.

Only while writing this bug I figured out how to delete a group using fossifyContacts. Long press on group name.
Without opening an issue right now for: For simplicity, delete and change name could (also) be visible when group opened and/or on group tab.

Hotfix: Use delete function inside FossifyContacts and "delete" again.