Situation: SAP window title display difference on SAP client machine even though it is access to the same SAP server.

Solution: 

ACTIVATING VISUALIZATION ON THE SAP CLIENT MACHINE

You have to activate window title option on Visualization of SAP client to affect the system title of SAP.

Procedure

1.    Open window SAP Log On in the system

2.    Open window Option by click on icons on the window Log On then select menu item Options

3.    Switch to the view Interaction Design  -> Visualization 2

4.    Enable the following options: Show system name in the taskbar under the Window Title