From the list of enhancements in ver. 11.0.4:[quote]Editor with long lines and highlight edit line enabled would not draw text correctly[/quote]
Almost solved in ver. 11.0.4: the artifacts are now gone, so thanks to the developers!
But when you move a non-maximised window in front of a window with the edit line highlighted, a part of the highlight disappears when focus is shifted back to the original window. Showing dialogs, like rightclick in a database source, select Compare To and Current database source, the Examdiff dialog (files are identical), will remove parts of the edit line highlight. When navigating in the window again, the edit line is redrawn correctly, so it is only a small visual error now.