i have two computers out of 30, running autocad 2010, inventor suite, 64 bit, when a polyline with an arc or fillet is stretched with a window entirely around the object, like stretching an assembly with the polyline fully within the window, one arc in the polyline anchors a vertex and stretches out of shape.
we have changed the template, it happens with both autocad vanilla and mechanical, then we open the file from another computer, even a 64 bit, and we cannot duplicate the problem. it seems to happen everytime on the problem computers and never on the others.
Below is a link that illustrates the problem. These are two polyline sets, one set without a radius, the other with a radius. Encompassing both completely with a stretch window causes the one with the radius to behave improperly. This has made editing drawings with many polyline shapes almost impossible in 2010.