Tooltip Offsetting

[bwarren2]

I am seeing a mouseover tooltip offset of a couple of inches (much bigger than on the demo pages). This frequently pushes the tooltip outside the rendering div of the chart, making things hard to read. Weirdly, it also changes orientation; when the chart is on its own row the offset is down, but when sharing space with another div the offset goes right. Is there some local tweaking in my chart spec necessary to keep the tooltip close to the mouse/element? Images here. In the first image my mouse is a couple of inches into the chart (and the tooltip is half-outside the render window), and in the second my mouse is on the tall red bar on the left. All of this is on Chromium (Version 31.0.1650.63 Ubuntu 13.10 (31.0.1650.63-0ubuntu0.13.10.1~20131204.1)
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