header authorization with negotiate is not added

[Snaut1]

hello!
I am using the function GssapiUseS4U2Proxy on. but the module does not generate a header authorization to the backend.
the same authorization: bearer header keep in the backend, although the module does not write any errors.

my code is

<VirtualHost *:80>
ServerName apkrb-test2.intra.net:80


DumpIOInput On
DumpIOOutput On
SSLProxyEngine on

Proxypass "/" "https://sap3.intra.net:44300/"
ProxyPassReverse "/" "https://sap3.intra.net:44300/"

Session on

# SessionCookieName gssapi_session path=/;httponly;
<Location "/">
<If "%{HTTP:X-User-Area} == 'LAN'">
AuthJWTSignatureAlgorithm RS256
AuthJWTSignaturePublicKeyFile /etc/httpd/conf.d/keycloaktestlan.pem
</If>
<ElseIf "%{HTTP:X-User-Area} == 'Internet'">
AuthJWTSignatureAlgorithm RS256
AuthJWTSignaturePublicKeyFile /etc/httpd/conf.d/keycloaktestdmz.pem
</ElseIf>
<Else>
AuthJWTSignatureAlgorithm HS256
AuthJWTSignatureSharedSecret xxxxxxxxxxxxxxx
</Else>
AuthJWTAttributeUsername userPrincipalNameCustom
AuthType jwt
AuthName "JWT Auth"
Require valid-user
</Location>
<Proxy *>
GssapiSSLonly On
AuthType GSSAPI
AuthName "GSSAPI Single Sign On Login"
Require valid-user
GssapiBasicAuth Off
GssapiCredStore keytab:/etc/httpd/conf.d/t_hrkrbtest.keytab
GssapiUseS4U2Proxy On
GssapiLocalName On
GssapiAllowedMech krb5
GssapiPublishMech On
GSSapiImpersonate On
GssapiPublishErrors On
GssapiNegotiateOnce Off
GssapiDelegCcacheDir /etc/httpd/conf.d/krb5/
GssapiDelegCcachePerms mode=0600 uid=48 gid=48
Session on

SessionCookieName gssapi_session path=/;httponly;

GssapiUseSessions on

GssapiSessionKey key:xxxxxxxxxxxx

SSLProxyCheckPeerName off
SSLProxyCheckPeerCN off
</Proxy>
ErrorLog "/var/log/httpd/apkrb-test2_error.log"
LogLevel debug dumpio:trace8 auth_jwt:trace8 auth_gssapi:trace8
CustomLog "/var/log/httpd/apkrb-test2_access.log" combined
</VirtualHost>