One more irritant, I wanted to change the name of a custom field  Reference:    to Details:   and when I change the text and add a colon to the end I receive an error message that I can't use those type of characters  even though a colon is contained within the default text.  If I don't delete the colon at the end of the default word and just change the letters, the same result.  There are loads of anomalies like this and I'm sure you have a very long list but I'll say it again - these sorts of snagging issues should have been sorted out by now.