Update from 4.3.0 to 4.6.0 has checksum issues

We’re encountering an issue where .sql file changesets, previously executed using Liquibase version 4.3.0, are now facing problems when run with version 4.6.0, resulting in checksum validation errors. Despite searching through the release notes, I haven’t found any information suggesting changes in the way checksum calculations are handled between these versions. Is this a common problem others are experiencing?

Example sql:

--
-- This SQL-Script updates the column1_item table and column1_column_cd_lb with sa.
--
-- column1_id 222 = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
-- column1_id 259 = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
--

DO $$
DECLARE itemid INT;
BEGIN

INSERT INTO column1_item VALUES(default, 'DEA', NULL, '1982-01-01 00:00:00', NULL, 123) ON CONFLICT("column1_id", "column_cd") DO UPDATE SET column_cd=EXCLUDED.column_cd RETURNING id INTO itemid;
INSERT INTO column1_column_cd_lb VALUES(default, 'DEA', '1982-01-01 00:00:00', NULL, itemid, 1) ON CONFLICT do nothing;
INSERT INTO column1_column_cd_lb VALUES(default, 'DEA', '1982-01-01 00:00:00', NULL, itemid, 3) ON CONFLICT do nothing;

INSERT INTO column1_item VALUES(default, 'DEA', NULL, '1982-01-01 00:00:00', NULL, 234) ON CONFLICT("column1_id", "column_cd") DO UPDATE SET column_cd=EXCLUDED.column_cd RETURNING id INTO itemid;
INSERT INTO column1_column_cd_lb VALUES(default, 'DEA', '1982-01-01 00:00:00', NULL, itemid, 1) ON CONFLICT do nothing;
INSERT INTO column1_column_cd_lb VALUES(default, 'DEA', '1982-01-01 00:00:00', NULL, itemid, 3) ON CONFLICT do nothing;

INSERT INTO column1_item VALUES(default, 'ABC', NULL, '1982-01-01 00:00:00', NULL, 123) ON CONFLICT("column1_id", "column_cd") DO UPDATE SET column_cd=EXCLUDED.column_cd RETURNING id INTO itemid;
INSERT INTO column1_column_cd_lb VALUES(default, 'ABC', '1982-01-01 00:00:00', NULL, itemid, 1) ON CONFLICT do nothing;
INSERT INTO column1_column_cd_lb VALUES(default, 'ABC', '1982-01-01 00:00:00', NULL, itemid, 3) ON CONFLICT do nothing;

INSERT INTO column1_item VALUES(default, 'ABC', NULL, '1982-01-01 00:00:00', NULL, 234) ON CONFLICT("column1_id", "column_cd") DO UPDATE SET column_cd=EXCLUDED.column_cd RETURNING id INTO itemid;
INSERT INTO column1_column_cd_lb VALUES(default, 'ABC', '1982-01-01 00:00:00', NULL, itemid, 1) ON CONFLICT do nothing;
INSERT INTO column1_column_cd_lb VALUES(default, 'ABC', '1982-01-01 00:00:00', NULL, itemid, 3) ON CONFLICT do nothing;

END $$