Error in Titles:Text. Move text only affects Inpector window

I'm running 14.2. on Windows 10.

If I enter a text string into the input window in the Inspector, it appears on the main view port, as expected.
Inspector: The Sun revolves around the Earth
View Port: The Sun revolves around the Earth

Now, if I correct my text and mark "Sun", hold down the left mouse button whilst hovering over it and drag it before "Earth", I see:
Inspector: The revolves around the SunEarth
View port: The Sun revolves around the Earth
Copying the whole text in the Inspector window (alt-C) shows the same as in the view port.

If I now mark "Earth" and drag it to where "Sun" was, I see:
Inspector: The Earth revolves around the Sun
View port: The Sun revolves around the Earth
Copying the whole text in the Inspector window (alt-C) shows the same as in the view port.

I now decide to add "and Moon" behind "Sun" and place the cursor immediately before the "r" of "revolves", I get:
Inspector: The Earth and Moon revolves around the Sun
View Port: The Sun reand Moon volves around the Earth
Copying the whole text in the Inspector window (alt-C) shows "The Sun reand Moon volves around the Earth"

I haven't tried this with the other title options, but presume it's the same.