The size of the edit box appears to be hard-coded in Kupu. It would be helpful if WysiwygPlugin
could be made to respect the EDITBOXHEIGHT (and EDITBOXWIDTH) preferences. Failing that, some other way of changing the height.
No, it's an artifact of the template (edit.kupu.tmpl) and is nothing to do with the EDITBOXWIDTH and EDITBOXHEIGHT, which are to do with the pain test editor only. If you want to change the height, you will have to edit the template.
Actually even Pattern skin now no longer uses the EDITBOXWIDTH for anything useful and the EDITBOXHEIGHT is now only a default as the height can be altered using the small arrows. In fact if it was not for classic skin we could remove both confusing settings from the users home topic. I have considered to remove them from my TWiki.
In Pattern Skin as well as Wysiwyg the width follows the browser window which makes much more sense.
What would be nice is if Wysiwyg could get the same feature - but since this is a kupu thing, it is the kupu editor that a change request should be raised against, Martin.