Xpointer resolution fails sometimes in variation window

[AnnaGerber]

The markers that highlight text in the variation window aren't created until the onLoad() event has occurred for the variation window. So in theory, any xpointer errors in the logs are due to either bugs within the xpointer library or the page's contents being changed. However I think some pages maybe failing due to embedded javascript which dynamically changes the DOM. While this is unavoidable, it might be worth adding small timeout after page load or waiting for other more specific events to see whether that fixes offending pages.
One of the variations which experience this problem is titled 'TAGORE & PATRICK WHITE', the variation window which should selected a text annotation sometimes fails.