Steps to reproduce the issue

Create form with

  <field name='description'
  type="editor" 
  cols="5"
  rows="5"
  label='COM_NKCOMP_FIELD_GROUPTARGET_LABEL'
  description='COM_NKCOMP_FIELD_DESC'
  required="true"
  buttons="false"
  filter="JComponentHelper::filterText"
/>

When rendered in components administration view, the value for the attribute "cols" is not shown in the HTML output for the according textarea element.

Expected result

Value for cols should be passed to HTML-Element.

Actual result

Empty attribute in HTML-Element textarea: cols=""

System information (as much as possible)

Linux, Apache2, php 5.4

Additional comments

traced it down to libraries/cms/form/field/editor/editor.php line 249:

249c249
< $this->name, htmlspecialchars($this->value, ENT_COMPAT, 'UTF-8'), $this->width, $this->height, $this->cols, $this->rows,
---
> $this->name, htmlspecialchars($this->value, ENT_COMPAT, 'UTF-8'), $this->width, $this->height, $this->columns, $this->rows,

In JFormFieldTextarea is no class variable "cols" but a class variable "columns".