Caret is offset when in a zoomed container

[WizardCM]

<div style="zoom:0.8">
    <p>Edit me</p>
</div>

If you then activate Aloha on the p element, the caret is placed down and to the right, in a place between where it should be, and where it would be without zoom. I learned this while implementing Aloha into reveal.js.

(This specific issue occurs in Chrome and Safari).