Hi Vladimir,
Looks as if you have assigned two different themes to the 2 instances: Top one is Corbu, bottom one is Signature/ Tradeshow.
In each case:
Go to SE16, follow the instructions in this blog:
A new user experience with SAP NetWeaver Business Client 4.0 (scroll down to "First Impressions (HTML edition)".
You should then have Corbu for both.
Docu with more details, eg different theme names, is also available:
HTH Julie.








