The Unlink and PDF tools icons are malformed on Editor toolbar in R3 2016 (ver 2016.3.914)

[Telerik Admin]

Hi folks,

You might experience an issue with missing or malformed Unlink and PDF toolbar tools with version 2016.3.914 of Kendo UI Editor.

The Problem
The issue could be observed on the following demos:

• Basic Usage demo - Click on any link to show the Unlink tool on the toolbar
• PDF Export demo - Switch to material skin

and is also logged with Medium severity here.
Here is how the PDF icon looks when the problem happens:

The Workround

A possible partial workaround is to add the following to the page styles:

.k-i-unlink { background-position: -288px -72px; }
.k-i-pdf { background-position: -288px -240px !important; }

Note that the solution works for all themes except the Office365.