make_desktop_entry part of [1] should be reverted for ardour-5.12. This seems like a result of backporting changes from live ebuild. [1] https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e795b3db7ee3e3fe3e735b5a1728aaf81855aef0
Ohh, you are right, that was my fault! This corrected now. Thanks for reporting.