Unity3D Webrequest SSL IOS CertificateHandler - unity3d

Question

Im trien to have a "Ignore all SSL Certificates" Checkbox for a Webrequest in Unity.
On Android it was working fine, but on IOS, I wasnt able to reset certhandler to default, it always returned true, once it was set. I tried dispose the handler by myself, set it to null and also I tried to clear cache.
Here is my code atm
using UnityEngine.Networking;
internal class AcceptAllCertificatesOrVerify : CertificateHandler
{
Main main = null;
protected override bool ValidateCertificate(byte[] certificateData)
{
if (main == null)
{
GameObject go = GameObject.Find("Main");
if (go != null)
{
main = go.GetComponent<Main>();
}
}
if (main != null && main.currentMandant != null && main.currentMandant.mandantIgnoreSSL)
{
main.ConsoleLog("ValidateCertificate: mandantIgnoreSSL");
return true;
}
else
{
if (main == null)
{
Debug.Log("ValidateCertificate: main null");
}
else
{
if (main.currentMandant == null)
{
main.ConsoleLog("ValidateCertificate: main.currentMandant null");
}
else
{
main.ConsoleLog("ValidateCertificate: main.currentMandant.mandantIgnoreSSL false");
}
}
}
main.ConsoleLog("Default ValidateCertificate");
return base.ValidateCertificate(certificateData);
}
}
it has some debugging activated, but when I check my adb log, I see only "ValidateCertificate: mandantIgnoreSSL". And never one of the other messages.
I also tried to set an remove certificateHandler dynamic like this:
{
webRequest.certificateHandler = new AcceptAllCertificatesOrVerify();
}
else
{
webRequest.certificateHandler = null;
}
But after AcceptAllCertificatesOrVerify was set once, I cant unset.
Is it a unity bug?