FJ Software

Sender and reciever name is same, is this a bug?

Phone:
Samsung Galaxy S4 GT-I9505 kitkat 4.4.2

No, it´s not a Bug ist a missunderstanding of what you see there.
You don´t see a sender and a reciever there, you see a conversation list between you and that IBK IT Lene of yours.
The difference (green/blue) only shows if a message was sent to you or from you.