[keycloak-user] jetty need restart after policy changed on keycloak

Hello, I have a few applications that are running on jetty, they are configured to be protected by keycloak with authorization enabled. While running some tests which requires dropping the realm and recreating it (programatically) I observer that if i don't restart jetty after recreating the realm/clients/policy/permission,... then i always get forbidden (403) when i try to access the protected app. Restarting jetty solves this problem. Is this a normal behavior ? If not how can I fix this? Thank you Thai