Blacked out text.

Ok, been using Scrivener for a while now. This is a new one for me. The text in one of my chapters is blacked out. It looks like one of those redacted top-secret government files. When I highlight over the text, as if I were going to copy and paste it, the text then becomes visible. So at least it’s not lost. Anyone know what this is? Anyone have a solution?

Any help would be greatly appreciated.