Thank you for your post.
Highlighted text is not supported in FileMaker Go. For more information about FileMaker Go design considerations, see Chapter 3 (page 17) of the FileMaker Go Development Guide:
There it is in black and white... Thank you! That's too bad, the highlight looks very slick on Pro. I'll just have to use a different font color instead.
Even font colors can disappear in FM GO if the user puts the cursor into the field by tapping the field.