Enable Text Selection Causes Shadowing of Text

[dreban]

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();