Wikia has multiple editors that you can use to edit pages. It is highly recommended that you change your preferences to use only the Source editor by default. Here is how:
- Go to Special:Preferences.
- Choose the "Editing" tab
- Select "Source editor" from the first drop-down selection on that tab.
- Push the "Save" button towards the bottom of the page.
It is best to use the Source editor so that you can make better, more precise edits. The Visual editor still has many bugs and is limited in what it can do. It will frequently misinterpret what you are trying to do and make changes to your edit automatically, resulting in frustrating, unintended, and confusing changes. If you use the Source editor, it will always do exactly what it should. If you need to see the changes before publishing the edit, you can always check the preview. Using the Source editor ensures that you do not cause unintended issues on pages.