Cors error when connecting through ssh tunnel

[Hoss3770]

I often want to test my apis on a staging server. I use a ssh tunnel to connect with my frontend. Even if I for example allow localhost:3000, I still get cors error. If I use a reverse proxy with a domain etc. the same api connects to my local frontend without problems
Does anyone know how why this happens and how to solve this problem? Can it be a bug in the package?
Thank you

[UlisesGascon]

Hi @Hoss3770! Thanks for reporting this bug. Can you provide a reproducible bug so we can investigate it?