A known bug (only some users experience it).
Workaround: add some dots (.....) to end of the title and format them with
font of the same colour as the title background.

Bernard, if it is a 'known' bug, why isn't there a better way to fix it?

I have tried the technique you passed onto Maggie, however I use excel quite
a bit (this forum is the only place I have found any information regarding my
troubles with the y axis labels) and it is so time consuming screwing around
with the fonts.

How else can this be fixed? Will a re-install help?