I have a answer from Cisco:
We are going to report this one to Apple with a Radar (bug ID). Can you please use the "Feedback" option on your phone and let them know that this broke in 10.3.2 as well?
Facebook:
Cisco AnyConnect Secure Mobility Client
7 Minuten ·
For those who like to install the latest and greatest OS pre-releases (as we always do), please refrain from going to iOS 10.3.2 pre-releases until further notice if you depend on AnyConnect. We will update the thread with further information once root caused by Apple. iOS 10.3 which was just released is working well with AnyConnect and is fully supported.