Vanishing "Options" in polyline editing during pan drawing with mouse

I have installed DraftSight, Polish, ver. V1R3.1 on 32 bit Windows 7 Professional, Service Pack 1 Polish language.

When I pan drawing with mouse during “EDITPOLYLINE” command execution, options in “Options” bar disappears and I cannot to execute it using mouse.

Also I cannot to execute options in command line. Entering a shortcut of any options not work, I have message “Nieprawidłowe słowo kluczowe opcji” (English translation: “Incorrect option keyword”).

Works only Enter and ESC key as finishing or breaking command execution.

In previous DraftSight versions it works without any problem, I could use the mouse or keyboard for options select during pan of the drawing.

Thanks in advance for quick answer.