When using the new python console for Qt5 it works when starting from the build tree, but after building the installer and installing it it does not work in the installed version. The libs are there, but the path probably is wrong.
When running the .exe of the installer everything works fine. If the Workbench is started with the shortcut created by the installer the libraries can't be imported. In the shortcut the execution start directory is set to "MITKInstalldir" where it should be "MITKInstalldir\bin"