No difference between taskbar view of two windows

[futurelauncher]

Hi, If you open two separate windows of Lucaschess, the images and names of windows are same. It confuses user while toggling between windows.

For e.g. if you open "Opening lines" and "Database" It looks like this -

It should be like this -

[lukasmonk]

Thank you very much for your point of view.