there is a user in my eDir which has a typo in the attr. surname (and
also in full name)

One Letter in the middle of the value is up:

wrong: MaYer
correct: Mayer

full name
wrong: Jeff MaYer
correct: Jeff Mayer

It is not possible to change the Y to y. Even after I press 'Apply' the
wrong letter is back.

It is possible to change the letter with another e.g. Y to b. And after
this I can change b to y. So the value is corrected. But it seems a
little bit complicated ... ;-)

In C1 it is possible to change the letter. So I think it is a bug in
a NPM.

Any hints?