WYSIWYG Editor HTML Window Too Small

I’m using “the_editor” in my plugin, all is fine apart from the html window starting off small. It can be resized seperate from the wysiwyg controls as if its a seperate thing. Resized in terms of width and height where normally it only allows you to resize the height. We would use the browser to make everything wider.

Any ideas?

It seems fine until I call saved content into the editor that’s the strange part.

Help is much appreciated