Thanks for your feedback.

I am really excited about sideways move. It is great! Wow For me it works only with Virtual Visitor View.

It will work only in Virtual visit mode. It doesn't have sense in Aerial view mode since in the latter case, the point of view always turns around a center of rotation.

Please consider a shortcut that enabled sideways move also with mouse (instead of arrows).

I was thinking about this too, but didn't have any idea of a good gesture. How does it work in FPS games?

And a stacktrace:

How did you get it? What version of Java do you use?