[keycloak-user] Disabling token Host validation for introspect?

I have 2 gateway proxies, through which i can access realm and retrieve oidc token, A and B. Issuer is set in token to either A or B. When i then send a request to an introspect endpoint with a token A through gateway B i get {"active": false} as a response. Through testing i've found that request returns proper data when issuer in the token equals the gateway i access it from. Is there a way to disable that Host check for introspect? I do not have direct control through which gateway introspect will be accessed and manually fixing Host header proves difficult due to numerous security fixes in java.