3 line addresses not possible

I'm not sure, where to report this bug. Everything is about using 3 line addresses. For example:

Teststreet 17
03333 Nicecity
Switzerland

There is a LyX example which suggests to use:

\address{Teststreet 17}{03333 Nicecity\protect\\[0.1em] Switzerland\protect\\[0.2em]}

The example can be found here:
http://www.lyx.org/trac/browser/lyx-devel/branches/BRANCH_2_0_X/lib/examples/modernCV.lyx

See also this page: http://wiki.lyx.org/Examples/CV

Unfortunately this is just a very ugly work-a-round. The \makelettertitle command produces an unwanted new line (I don't know why), while the \makecvtitle command does not. So you have to different versions of your address.

See also this question on stackexchange: http://tex.stackexchange.com/questions/75411/latex-error-with-moderncv-and-letter