[Theme: Adventure Journal] Links disappearing!

This wouldn’t be a theme-related issue, since AJ doesn’t modify editor content.

The first thing to try would be to disable ALL your plugins, then restore them one at a time, testing the editor each time you activate one.

It sounds tedious, especially if you have a lot of plugins, but it’s really the only way to figure out where things are going wrong. Pay particular attention to plugins that add to or modify the editor page.