At https://src.fedoraproject.org/rpms/emacs-rinari/diff/remote, if one enters nothing for "Title", https://github.com/scfc/fedora-rpms-emacs-rinari for "Git repo address" and obsolete-el-package for "Git branch", selects f28 in the listbox "To branch:" and clicks "Preview", the form is reloaded with the error message "This field is required." for the "Title" field and the inputs for "Git repo address" and "Git branch" are retained, but "To branch:" ist reset to master.