/usr/lib/python2.7/dist-packages/trytond/modules/account/view/tax_group_form.xml is in tryton-modules-account 3.0.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/trytond/modules/account/view/../../../../../../../share/pyshared/trytond/modules/account/view/tax_group_form.xml