diff --git a/libs/providers/flagd/src/e2e/step-definitions/providerSteps.ts b/libs/providers/flagd/src/e2e/step-definitions/providerSteps.ts
index 65963e9b3..0d9b9cc98 100644
--- a/libs/providers/flagd/src/e2e/step-definitions/providerSteps.ts
+++ b/libs/providers/flagd/src/e2e/step-definitions/providerSteps.ts
@@ -3,6 +3,7 @@ import { FlagdContainer } from '../tests/flagdContainer';
 import type { State, Steps } from './state';
 import { FlagdProvider } from '../../lib/flagd-provider';
 import type { FlagdProviderOptions } from '../../lib/configuration';
+import { ProviderStatus } from '@openfeature/server-sdk';
 
 export const providerSteps: Steps =
   (state: State) =>
@@ -67,6 +68,21 @@ export const providerSteps: Steps =
       state.providerType = providerType;
     });
 
+    function mapProviderState(state: string): ProviderStatus {
+      const mappedState = state.toUpperCase().replace('-', '_');
+      const status = Object.values(ProviderStatus).find((s) => s === mappedState);
+
+      if (!status) {
+        throw new Error(`Unknown provider status: ${state}`);
+      }
+
+      return status;
+    }
+
+    then(/^the client should be in (.*) state/, (providerState: string) => {
+      expect(state.client?.providerStatus).toBe(mapProviderState(providerState));
+    });
+
     when(/^the connection is lost for (\d+)s$/, async (time) => {
       console.log('stopping flagd');
       await fetch('http://' + container.getLaunchpadUrl() + '/restart?seconds=' + time);
diff --git a/libs/providers/flagd/src/e2e/step-definitions/utils.ts b/libs/providers/flagd/src/e2e/step-definitions/utils.ts
index 44eaf3cb1..059e05fee 100644
--- a/libs/providers/flagd/src/e2e/step-definitions/utils.ts
+++ b/libs/providers/flagd/src/e2e/step-definitions/utils.ts
@@ -19,6 +19,8 @@ export function mapValueToType(value: string, type: string): any {
       return value.toLowerCase() as ResolverType;
     case 'CacheType':
       return value as CacheOption;
+    case 'StringList':
+      return value.split(',').map((item) => item.trim());
     case 'Object':
       if (value == 'null') {
         return undefined;
diff --git a/libs/providers/flagd/src/e2e/tests/in-process.spec.ts b/libs/providers/flagd/src/e2e/tests/in-process.spec.ts
index 04058600f..efa55e9ae 100644
--- a/libs/providers/flagd/src/e2e/tests/in-process.spec.ts
+++ b/libs/providers/flagd/src/e2e/tests/in-process.spec.ts
@@ -22,7 +22,7 @@ describe('in-process', () => {
       // remove filters as we add support for features
       // see: https://github.com/open-feature/js-sdk-contrib/issues/1096 and child issues
       tagFilter:
-        '@in-process and not @targetURI and not @customCert and not @events and not @sync and not @grace and not @metadata and not @contextEnrichment',
+        '@in-process and not @targetURI and not @forbidden and not @customCert and not @events and not @sync and not @grace and not @metadata and not @unixsocket and not @sync-payload and not @contextEnrichment',
       scenarioNameTemplate: (vars) => {
         return `${vars.scenarioTitle} (${vars.scenarioTags.join(',')} ${vars.featureTags.join(',')})`;
       },
diff --git a/libs/providers/flagd/src/e2e/tests/rpc.spec.ts b/libs/providers/flagd/src/e2e/tests/rpc.spec.ts
index e6b10f327..3541fc599 100644
--- a/libs/providers/flagd/src/e2e/tests/rpc.spec.ts
+++ b/libs/providers/flagd/src/e2e/tests/rpc.spec.ts
@@ -23,7 +23,7 @@ describe('rpc', () => {
       tagFilter:
         // remove filters as we add support for features
         // see: https://github.com/open-feature/js-sdk-contrib/issues/1096 and child issues
-        '@rpc and not @targetURI and not @customCert and not @events and not @stream and not @grace and not @metadata and not @contextEnrichment and not @caching',
+        '@rpc and not @targetURI and not @customCert and not @forbidden and not @events and not @stream and not @grace and not @metadata and not @contextEnrichment and not @caching',
       scenarioNameTemplate: (vars) => {
         return `${vars.scenarioTitle} (${vars.scenarioTags.join(',')} ${vars.featureTags.join(',')})`;
       },
diff --git a/libs/providers/flagd/src/lib/configuration.spec.ts b/libs/providers/flagd/src/lib/configuration.spec.ts
index c13fe11e8..d10a8f512 100644
--- a/libs/providers/flagd/src/lib/configuration.spec.ts
+++ b/libs/providers/flagd/src/lib/configuration.spec.ts
@@ -61,6 +61,20 @@ describe('Configuration', () => {
     });
   });
 
+  it('should use flagd sync port over flagd port environment option', () => {
+    const port = 8080;
+    const syncPort = 9090;
+
+    process.env['FLAGD_PORT'] = `${port}`;
+    process.env['FLAGD_SYNC_PORT'] = `${syncPort}`;
+
+    expect(getConfig()).toStrictEqual(
+      expect.objectContaining({
+        port: syncPort,
+      }),
+    );
+  });
+
   it('should use incoming options over defaults and environment variable', () => {
     const options: FlagdProviderOptions = {
       host: 'test',
@@ -76,6 +90,7 @@ describe('Configuration', () => {
 
     process.env['FLAGD_HOST'] = 'override';
     process.env['FLAGD_PORT'] = '8080';
+    process.env['FLAGD_SYNC_PORT'] = '9090';
     process.env['FLAGD_TLS'] = 'false';
     process.env['FLAGD_DEFAULT_AUTHORITY'] = 'test-authority-override';
 
@@ -87,6 +102,11 @@ describe('Configuration', () => {
     expect(getConfig()).toStrictEqual(expect.objectContaining({ port: 8013 }));
   });
 
+  it('should ignore an invalid sync port set as an environment variable', () => {
+    process.env['FLAGD_SYNC_PORT'] = 'invalid number';
+    expect(getConfig()).toStrictEqual(expect.objectContaining({ port: 8013 }));
+  });
+
   describe('port handling', () => {
     describe('for "in-process" evaluation', () => {
       const resolverType = 'in-process';
diff --git a/libs/providers/flagd/src/lib/configuration.ts b/libs/providers/flagd/src/lib/configuration.ts
index d9076c846..2b8ca970e 100644
--- a/libs/providers/flagd/src/lib/configuration.ts
+++ b/libs/providers/flagd/src/lib/configuration.ts
@@ -101,6 +101,7 @@ const DEFAULT_IN_PROCESS_CONFIG: Config = { ...DEFAULT_CONFIG, resolverType: 'in
 enum ENV_VAR {
   FLAGD_HOST = 'FLAGD_HOST',
   FLAGD_PORT = 'FLAGD_PORT',
+  FLAGD_SYNC_PORT = 'FLAGD_SYNC_PORT',
   FLAGD_DEADLINE_MS = 'FLAGD_DEADLINE_MS',
   FLAGD_TLS = 'FLAGD_TLS',
   FLAGD_SOCKET_PATH = 'FLAGD_SOCKET_PATH',
@@ -137,6 +138,9 @@ const getEnvVarConfig = (): Partial<Config> => {
     ...(Number(process.env[ENV_VAR.FLAGD_PORT]) && {
       port: Number(process.env[ENV_VAR.FLAGD_PORT]),
     }),
+    ...(Number(process.env[ENV_VAR.FLAGD_SYNC_PORT]) && {
+      port: Number(process.env[ENV_VAR.FLAGD_SYNC_PORT]),
+    }),
     ...(Number(process.env[ENV_VAR.FLAGD_DEADLINE_MS]) && {
       deadlineMs: Number(process.env[ENV_VAR.FLAGD_DEADLINE_MS]),
     }),
diff --git a/libs/shared/flagd-core/test-harness b/libs/shared/flagd-core/test-harness
index 59c3c3ccf..6948dcbab 160000
--- a/libs/shared/flagd-core/test-harness
+++ b/libs/shared/flagd-core/test-harness
@@ -1 +1 @@
-Subproject commit 59c3c3ccfb018db82281684d231067e332c8103d
+Subproject commit 6948dcbabef284fae4a4c1d03ce5e0bd9ea34c17