Paste within or between Word docs loses formatting

I use Word (Office 365; Win 10 Pro 1903) for music lead sheets. I have the guitar chords in a larger font on a line above the lyric.

If I try to copy the line of chords (in red in the following screenshot), and then paste it into the 3rd line above the line "The oranges are piled...", the formatting reverts to the document default. The paste then looks like this:



Here is a screenshot of my Word Options/Advanced, Copy Paste section:


I've never had this happen before, and I've done this kind of copy/paste for many years through many different versions of Word.

Thanks in advance if anyone can help me.