I can't confirm this. As you can see, it works as expected in Dresden (e.g. search for "zehen bücher") and Stuttgart (e.g. search for "ludwigsburg von der ostseite"). Thus I think, this is a problem with your configuration and/or templates.
Could you please post the template you are using for the listview plugin and the typoscript part of your configuration for the author field?
I can't confirm this. As you can see, it works as expected in Dresden (e.g. search for "zehen bücher") and Stuttgart (e.g. search for "ludwigsburg von der ostseite"). Thus I think, this is a problem with your configuration and/or templates.
Could you please post the template you are using for the listview plugin and the typoscript part of your configuration for the author field?