After updating from 7.0.4 to 7.0.11 I get the error: Npgsql.PostgresException: '42P07: relation "__EFMigrationsHistory" already exists' on running dbContext.Database.Migrate(); from the program.cs in an winforms (core 7.0.11) application.

My connect string looks like this: "Host=localhost;Database=dev_copy;Username=postgres;Password=postgres; SearchPath = schema_prod"

After downgrading Npgsql back to 7.0.4 it works again as expected.