diff --git a/flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/plugin_scripts_js/InterceptAjaxRequestJS.java b/flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/plugin_scripts_js/InterceptAjaxRequestJS.java
index c36bf256..4a892dc7 100644
--- a/flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/plugin_scripts_js/InterceptAjaxRequestJS.java
+++ b/flutter_inappwebview_android/android/src/main/java/com/pichillilorenzo/flutter_inappwebview_android/plugin_scripts_js/InterceptAjaxRequestJS.java
@@ -220,7 +220,7 @@ public class InterceptAjaxRequestJS {
           "              data = new Uint8Array(result.data);" +
           "            }" +
           "            self.withCredentials = result.withCredentials;" +
-          "            if (result.responseType != null) {" +
+          "            if (result.responseType != null && self.isAsync) {" +
           "              self.responseType = result.responseType;" +
           "            };" +
           "            for (var header in result.headers) {" +
@@ -233,10 +233,13 @@ public class InterceptAjaxRequestJS {
           "              }" +
           "              setRequestHeader.call(self, header, value);" +
           "            };" +
-          "            if ((self._flutter_inappwebview_method != result.method && result.method != null) || (self._flutter_inappwebview_url != result.url && result.url != null)) {" +
+          "            if ((self._flutter_inappwebview_method != result.method && result.method != null) ||" +
+          "                (self._flutter_inappwebview_url != result.url && result.url != null) ||" +
+          "                (self._flutter_inappwebview_isAsync != result.isAsync && result.isAsync != null) ||" +
+          "                (self._flutter_inappwebview_user != result.user && result.user != null) ||" +
+          "                (self._flutter_inappwebview_password != result.password && result.password != null)) {" +
           "              self.abort();" +
           "              self.open(result.method, result.url, result.isAsync, result.user, result.password);" +
-          "              return;" +
           "            }" +
           "          }" +
           "          send.call(self, data);" +
diff --git a/flutter_inappwebview_ios/ios/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift b/flutter_inappwebview_ios/ios/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
index b5d3a54f..be260499 100644
--- a/flutter_inappwebview_ios/ios/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
+++ b/flutter_inappwebview_ios/ios/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
@@ -219,7 +219,7 @@ let INTERCEPT_AJAX_REQUEST_JS_SOURCE = """
                 data = new Uint8Array(result.data);
               }
               self.withCredentials = result.withCredentials;
-              if (result.responseType != null) {
+              if (result.responseType != null && self.isAsync) {
                 self.responseType = result.responseType;
               };
               if (result.headers != null) {
@@ -234,10 +234,13 @@ let INTERCEPT_AJAX_REQUEST_JS_SOURCE = """
                   setRequestHeader.call(self, header, value);
                 };
               }
-              if ((self._flutter_inappwebview_method != result.method && result.method != null) || (self._flutter_inappwebview_url != result.url && result.url != null)) {
+              if ((self._flutter_inappwebview_method != result.method && result.method != null) ||
+                  (self._flutter_inappwebview_url != result.url && result.url != null) ||
+                  (self._flutter_inappwebview_isAsync != result.isAsync && result.isAsync != null) ||
+                  (self._flutter_inappwebview_user != result.user && result.user != null) ||
+                  (self._flutter_inappwebview_password != result.password && result.password != null)) {
                 self.abort();
                 self.open(result.method, result.url, result.isAsync, result.user, result.password);
-                return;
               }
             }
             send.call(self, data);
diff --git a/flutter_inappwebview_macos/macos/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift b/flutter_inappwebview_macos/macos/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
index b5d3a54f..be260499 100644
--- a/flutter_inappwebview_macos/macos/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
+++ b/flutter_inappwebview_macos/macos/Classes/PluginScriptsJS/InterceptAjaxRequestJS.swift
@@ -219,7 +219,7 @@ let INTERCEPT_AJAX_REQUEST_JS_SOURCE = """
                 data = new Uint8Array(result.data);
               }
               self.withCredentials = result.withCredentials;
-              if (result.responseType != null) {
+              if (result.responseType != null && self.isAsync) {
                 self.responseType = result.responseType;
               };
               if (result.headers != null) {
@@ -234,10 +234,13 @@ let INTERCEPT_AJAX_REQUEST_JS_SOURCE = """
                   setRequestHeader.call(self, header, value);
                 };
               }
-              if ((self._flutter_inappwebview_method != result.method && result.method != null) || (self._flutter_inappwebview_url != result.url && result.url != null)) {
+              if ((self._flutter_inappwebview_method != result.method && result.method != null) ||
+                  (self._flutter_inappwebview_url != result.url && result.url != null) ||
+                  (self._flutter_inappwebview_isAsync != result.isAsync && result.isAsync != null) ||
+                  (self._flutter_inappwebview_user != result.user && result.user != null) ||
+                  (self._flutter_inappwebview_password != result.password && result.password != null)) {
                 self.abort();
                 self.open(result.method, result.url, result.isAsync, result.user, result.password);
-                return;
               }
             }
             send.call(self, data);