Have you tried using a simple text editor instead of what is offered by WikiTree? Once the edits are complete using your text editor, it is very simple to cut-and-paste the complete profile into WikiTree. I also cut-and-paste to use the WikiTree Preview. This helps to find errors. I then fix the errors in my text editor before saving to WikiTree.
Text editors solve the problem you mention. They also have spell check, search and replace, macros, etc., which are not offered by WikiTree.
Saving the file to your local computer also assures that you never lose your edits. Since you are only saving to WikiTree at the end of your edits, there are fewer changes shown in the Changes Tab, making it easier for others to follow your edits. (Some people using the WikiTree editor will save the profile several times while editing, just so they won't lose anything. This makes it difficult for others to follow along with the edits in the Changes Tab.)