So, I've had this problem from time to time & I've established that there's some kind of invisible character in the line of text. What I normally do is use the right arrow to go through the line of type. Usually, at some point along the line two clicks to the right only results in the cursor moving one letter & so I know there's an invisible character there. I can then find the right spot & delete the invisible character, the line of type goes black & the problem is solved.

Now, for the first time, I have an album where almost every track title is blue. Before I go through the rather laborious process above, is there a quick way to fix this?

The quickest way I could imagine would be for me to export the entire track list as a text file, paste that into Adobe InDesign, show the hidden characters & delete them. But I can't find a way to export the entire track list as a text file.

Just wondering if you have a fix for this?

It also appears blue if I copy & paste it into the comments box. It's slightly easier to fix when I can see it there clearly, but still a bit of a chore going track by track, so I figured it was worth an ask.

(See top right of the screenshot for the blue type.)

Yep The Multi Field Editor's Trim panel with Remove invalid selected will do the trick.

If a field does not display Mixed you can right click in the field; select Yate Transformations, then Remove Invalid Characters to do the same.

Do a Help>Search Yate Help. Look for blue. There's be a topic named What's With the Blue Text and Red Labels?