If you load the Calendar demo in IE without specifying lzt=html, something in the way it's embedded in the page makes the canvas slide around a little in its frame when the info panel is opened. It's almost as though the embedded frame is somehow larger than the specified canvas size. Scrolling back to the left will reveal the entire app.

I'm not sure if this is an issue with how apps are embedded in IE, or some issue with canvas, or something IE just generally doesn't like about there being a view positioned outside the canvas that slides into it, making it feel it needs to shift to reveal this view.

Filing this under SA - Calendar for now, though it may be a broader issue. I'll try to repro in a test case, but since it's fine with lzt=html, it can probably wait until a later release, since the only way a person would see it would be if they loaded demos/calendar/calendar.lzx?lzr=dhtml directly, on its own.