Markdown cell latex producing unwanted vertical bar

Question

Vertical bars are being shown after latex sections when markdown cells are rendered. Is there any way to remove these?

For example, the following code inside a markdown cell:

$\left[ \begin{array}{cccc}
x_{11} & x_{12} & \ldots & x_{1D} \\
x_{21} & x_{22} & \ldots & x_{2D} \\
x_{31} & x_{32} & \ldots & x_{3D} \\ \end{array} \right]$

renders as

and

$\mathbf{W} \in \mathbb{R}^{D\times K}$

renders as

Software Versions

Mac OS 10.10.5

chrome 48.0.2564.48 (Official Build) beta (64-bit)

ipython notebook --version 4.0.6

Answer 1

Here's the issue about this on jupyter repository, closed and merged in the beginning of February: https://github.com/jupyter/notebook/issues/1059

Answer 2

I find this problem occurs in Chrome 48.0.2564.97, but not Firefox, in both Windows 10 and Ubuntu.