Hi Jussi
I am using 3.96q beta of Zeus. I run with all windows in normal mode ( not maximized, standard MDI) and have the editor option "Auto sort files on open" checked. After a compile which contains errors, I double click the mouse on the displayed error in the project window and the focus correctly switches to the correct place in the source window. However, the ordering of document tabs changes. The document with the build error which just received focus moves to the end of the list.
Jack