We were running version 2.182 of Jenkins.
Since we have update to version 2.214 there is a lot of issue if we aren't running out browser in other language than english.
For example, it is impossible to add parameters to a job.
1. The button itself isn't decorated properly. And pressing it won't do anything.
2. Running a job without parameters (already created job). Will cause a Jenkins Crash:
And if we look at the request post. There is indeed a second json within the header....
Other language than french seem to be affected. We have tried with spanish and get the same result.
Also, within the console we are seeing a this error:
Thanks for your help!