You can forgive an event and still flinch at its setting.

Forgiveness happens in the mind and the body does not always get the message. You can have genuinely let something go and still tighten walking into the same building, hearing the same tone of voice, smelling the same room. That reaction is a leftover physical association rather than evidence that the forgiveness was fake.

When the flinch comes, you can note it without treating it as a verdict on your progress. Give it time and repetition in safer circumstances if that is available. The mind and the body run on different schedules and the slower one is not lying.