Steps to reproduce the problem:
1. enable data saver
2. call http://www.noz.de/lokales/osnabrueck/artikel/846402/stadtwerke-feier-im-landgericht-osnack-hat-folgen
3. receive 400 Bad Request
4. disable data saver
5. call http://www.noz.de/lokales/osnabrueck/artikel/846402/stadtwerke-feier-im-landgericht-osnack-hat-folgen
6. page redirects to http://www.noz.de/lokales/osnabrueck/artikel/846402/stadtwerke-feier-im-landgericht-osnabrueck-hat-folgen with no error

What is the expected behavior?
You should be redirected instead of receiving an error page.

What went wrong?
Once you reach a redirect (and only on redirects) the site returns a 400 Bad Request only if data saver is enabled. If data saver is disabled the problem disappears. 
The remote address looks like a google server, so we don't know what we could do to fix this error.

Did this work before? N/A 

Chrome version: 56.0.2924.87  Channel: stable
OS Version: 6.0.1

It happens on various devices, versions and even on the desktop once the data saver is activated. We tried to work around this problem by using "Cache-Control: no-transform" but it doesn't help.