Writing string via EF Core contains unexpected bytes

[stormcrow79]

Inserting or updating a string field using Entity Framework results in unexpected byte sequences when all of the following conditions are met:

• the connection string specifies an encoding other than UTF-8
• the entity contains a string property where the database column has the character set 'NONE'

Environment

• Firebird 4.0.2 x64 on Windows
• .NET 6
• FirebirdSql.EntityFrameworkCore.Firebird 9.1.1

create table tests (
  id int generated by default as identity primary key,
  name varchar(50) character set none);

var connectionString = "DataSource=localhost;User=SYSDBA;Password=********;Database=employee;Character Set=ISO8859_1;";

context.Tests.Add(new Test() { Name = "Entr\u00E9e" });

Expected outcome: name contains "Entrée" with an accented e Actual outcome: name contains "Entrée" (the UTF-8 bytes for U+00E9)