I'm currently having a lot of issues (after upgrading Wildfly > 10) with special characters, such as the German "Umlaut" using AJP. I already created a Stackoverflow issues a while ago, but I simply wanted to ask here in the forums one more time before posting this as a Bug Report.
I'll update my question according to my latest tests, but it will be very similar. So here we go:
As already stated this problem happened after upgrading Wildfly. Originally (when writing my Stackoverflow question) I had 10 installed and upgraded to 13, but the problem still exists with the most current version (14.0.1).
I'm have serious issues with encoding in Wildfly. I don't know if this is a Wildfly Bug so I'm asking for help here first. Maybe I just missed something.
I also tested this with multiple Java versions in the meantime, so I'm pretty sure that it's not related to my Java 8 to Java 10 upgrade (which I stated in the Stackoverflow question).
Validating the problem
Shibboleth / Apache2 / Wicket
The link to the original Stackoverflow questions: https://stackoverflow.com/questions/51542234/wildfly-13-utf-8-encoding-servlet-issues