Fix multiple origins issue

virtweb_backend/src/app_config.rs

@@ -134,6 +134,7 @@ impl AppConfig {
 
     /// Get auth cookie domain
     pub fn cookie_domain(&self) -> Option<String> {
+        if cfg!(debug_assertions) {
             let domain = self.website_origin.split_once("://")?.1;
             Some(
                 domain
@@ -142,6 +143,10 @@ impl AppConfig {
                     .unwrap_or(domain)
                     .to_string(),
             )
+        } else {
+            // In release mode, the web app is hosted on the same origin as the API
+            None
+        }
     }
 
     /// Get app secret