Enable Text Selection Causes Shadowing of Text

When a view is rendered (in this case from pdf) and the enableTextSelection property in javascript is set to true, all the text in the viewer is suddenly shadowed. Happens in Firefox, IE, Edge, Chrome and Safari. Setting it back, solves the problem, but I need the content selectable.

Sample of script:
var viewer = Crocodoc.createViewer('.viewer', {
url: 'https://view-api.box.com/1/sessions/[sessionid]/assets/',
layout: Crocodoc.LAYOUT_VERTICAL,
**enableTextSelection:true**
});
viewer.load();

Start by reproducing the issue with the Crocodoc.createViewer entry point and enableTextSelection set to true, using the sample configuration in the report. Trace the text rendering and selection behavior in the viewer, then verify that text remains selectable without shadowing across the reported browsers.

Written by the indexing model from the issue text.