Comment 1 for bug 1333577

> - click and drag an object;
> - while dragging, press the left mouse button to open the contextual menu;
> - the object jumps back to its original position, still selected and the contextual menu appears;

Reproduced on Windows XP, Inkscape 0.48.5 and trunk revision 13438.

> - all the operations in the contextual menu are grayed out so it looks as not related to anything;
> - the contextual dialog don't disappear even after clicking around: the only way I found is minimizing and restoring the window.

Not reproduced. The contextual menu is correctly related to the clicked object, and clicking around closes the contextual menu. Thus I can't reproduce you additional steps with more than one dialog.