i ma speaking about this one. When you click on "edit" then "more option". this editor can't be larger than a certain size. I would like to have the same comportement than the botom "post a replay" editor.
Really, that's just the standard way that XF forms behave, they have a max-width of 800px. Changing that globally may well be problematic, but if you wanted to change it specifically on that page, you could add the following to your EXTRA.css template: