StringIndexOutOfBoundsException in JSF web-app after commit for WFLY-476

The commit c1959b31c0f5320d3ee7992e8a545ba497433162 breaks my web-app.
With
git pull && git reset --hard 861a9ceaa80274edaf32f705887f0bb38068b68d
my web-app works fine.
But with
git pull && git reset --hard c1959b31c0f5320d3ee7992e8a545ba497433162
my web-app starts, index.xhtml renders. But when clicking one of the links the navigation fails.