We recently upgrade WordPress and it appears that our post editor is a very narrow textarea. Its stuck at 40 characters wide. Its very challenging to work with. More specifically its stuck with these properties:
<textarea class="wp-editor-area" style="height: 360px" cols="40" name="content" id="content">
There doesn’t appear to be any ability to drag to widen the textarea. Moreover, there is a giant wasted dead space to the right of the editor control.
I can’t imagine what we could have done to cause this? I’d like to make posting blog articles easier, and the narrow editor makes it a bit painful to use.
You can use the following (mu-)plugin to change the height. You just need to adjust the height as you need it.