The gem is unsorting schema.db entries

[texpert]

Our team is using this gem successfully, the schema.db is pretty well sorted. But when I run migrations or rollbacks on my local machine (on MacOS), the schema is getting unsorted, having exactly the order as it is in the DB. Is it my Mac guilty?

Also, a little nitpick - the 'rails', '~> 4.2.0' is specified in the gemspec, and the tests are running OK. But when changing to 'rails', '~> 5.2.0', the integration_spec fails, because on migration add_index is put into the schema inside the table as t.index.