Vendor specific plugins that support QMI or MBIM based devices need to handle the creation of these modems themselves, instead of falling back to the generic plugin.
Discussed here: https://lists.freedesktop.org/archives/modemmanager-devel/2017-March/004253.html
Fix pushed to git master as 6de2d84af17a88cbef509187c96d2d91a06c6914.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.