Missing contacts

[WebworkrNet]

Device: Samsung Galaxy A13 5G (SM-A136B/DSN)
Operating System: Android 14, One UI-Version 6.0
Fossify Contacts: 1.0.1
Parallel to Fossify, I currently have the Samsung Contacts app installed so that I can make a comparison. I have noticed that some contacts sometimes appear under Samsung, but not under Fossify.

• "Merge duplicate contacts" is switched off.
• All accounts set up on the device are shown.

What could be the cause?

Thank you

[WebworkrNet]

Maybe related to issue Contacts load with a long delay or not at all FossifyOrg/General-Discussion#220.