Can we make wiki type editor full width of section?

We have some wiki fields but the editor only takes up half of the section box. i.e. the label is in the left column the editor in the right creating a large white space under the label. We have solved this problem before by adding the property labelVisible=false, which expands the editor box to the full section width. However this has an undesired effect in the eclipse client - the edit icon for the wiki goes to the top of the section regardless of where the wiki attribute is located.