MODX TinyMCE Width Height Issue

Using TinyMCE 4.3.3 on MODX Revolution 2.2.2-pl (advanced) & MODX Revolution 2.2.1-pl (advanced).

The issue I am having is when setting a TV to richtext, TinyMCE is not adjusting the width and height of the textarea correctly. It has the width and height set in-line to width:187px; height:100px;

Any help would be greatly appreciated.

If your using form customization make sure the TV is set to render in the modx-resource-content area otherwise it will default it to the modx-resource-main-left area and restrict it's width.