Posted by Martin on Nov 09, 2021; 12:48pm
URL: https://forum.jogamp.org/Incorrect-context-on-GLCanvas-drawable-tp4041391p4041475.html

Thanks for the link. The last comment helped : "Just realized MinGW-W64 does have an option to specify x86_64 architecture during installation process. Not sure why i686 is selected by default."

Now the build succeeds.