invalid diff for changes in generated column

[frisi]

running apgdiff old_dump.sql vanilla_dump.sql produces an invalid diff

vanilla_dump.sql:

CREATE TABLE gql.article_properties (
    digests gql.sha1_digest[] GENERATED ALWAYS AS (gql.used_digests(main_image, og_image, blocks)) STORED
);

old_dump.sql:

CREATE TABLE gql.article_properties (
    digests gql.sha1_digest[] GENERATED ALWAYS AS (gql.used_digests(main_image, blocks)) STORED
);

produced diff

ALTER TABLE article_properties
  ...
  ALTER COLUMN digests TYPE gql.sha1_digest[] GENERATED ALWAYS AS (gql.used_digests(main_image, og_image, blocks)) STORED USING digests::gql.sha1_digest[] GENERATED ALWAYS AS (gql.used_digests(main_image, og_image, blocks)) STORED;