diff --git a/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/AwsCrt4aSigningAdapter.java b/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/AwsCrt4aSigningAdapter.java
index 4db8d0a762ec..86305df04715 100644
--- a/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/AwsCrt4aSigningAdapter.java
+++ b/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/AwsCrt4aSigningAdapter.java
@@ -43,11 +43,11 @@ public SdkHttpFullRequest signRequest(SdkHttpFullRequest request, AwsSigningConf
         try {
             HttpRequest signedRequest = future.get();
             return requestConverter.crtRequestToHttp(request, signedRequest);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw SdkClientException.create("The thread got interrupted while attempting to sign request: " + e.getMessage(), e);
         } catch (Exception e) {
-            throw SdkClientException.builder()
-                    .message("Unable to sign request: " + e.getMessage())
-                    .cause(e)
-                    .build();
+            throw SdkClientException.create("Unable to sign request: " + e.getMessage(), e);
         }
     }
 
@@ -57,11 +57,11 @@ public SdkSigningResult sign(SdkHttpFullRequest request, AwsSigningConfig signin
         try {
             AwsSigningResult signingResult = future.get();
             return requestConverter.crtResultToAws(request, signingResult);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw SdkClientException.create("The thread got interrupted while attempting to sign request: " + e.getMessage(), e);
         } catch (Exception e) {
-            throw SdkClientException.builder()
-                                    .message("Unable to sign request: " + e.getMessage())
-                                    .cause(e)
-                                    .build();
+            throw SdkClientException.create("Unable to sign request: " + e.getMessage(), e);
         }
     }
 
@@ -70,11 +70,11 @@ public byte[] signChunk(byte[] chunkBody, byte[] previousSignature, AwsSigningCo
         CompletableFuture<byte[]> future = AwsSigner.signChunk(crtBody, previousSignature, signingConfig);
         try {
             return future.get();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw SdkClientException.create("The thread got interrupted while attempting to sign request: " + e.getMessage(), e);
         } catch (Exception e) {
-            throw SdkClientException.builder()
-                                    .message("Unable to sign chunk: " + e.getMessage())
-                                    .cause(e)
-                                    .build();
+            throw SdkClientException.create("Unable to sign request: " + e.getMessage(), e);
         }
     }
 
diff --git a/services/s3/src/main/java/software/amazon/awssdk/services/s3/internal/handlers/EndpointAddressInterceptor.java b/services/s3/src/main/java/software/amazon/awssdk/services/s3/internal/handlers/EndpointAddressInterceptor.java
index 9fd41e90a308..65bad3a1a081 100644
--- a/services/s3/src/main/java/software/amazon/awssdk/services/s3/internal/handlers/EndpointAddressInterceptor.java
+++ b/services/s3/src/main/java/software/amazon/awssdk/services/s3/internal/handlers/EndpointAddressInterceptor.java
@@ -66,10 +66,12 @@ public SdkHttpRequest modifyHttpRequest(Context.ModifyHttpRequest context,
         ConfiguredS3SdkHttpRequest configuredRequest = S3EndpointResolverFactory.getEndpointResolver(resolverFactoryContext)
                                                                                 .applyEndpointConfiguration(resolverContext);
 
-        configuredRequest.signingRegionModification()
-                         .map(region -> executionAttributes.putAttribute(AwsSignerExecutionAttribute.SIGNING_REGION, region))
-                         .orElseGet(() -> executionAttributes.putAttribute(AwsSignerExecutionAttribute.SIGNING_REGION_SCOPE,
-                                                                           RegionScope.GLOBAL));
+        if (configuredRequest.signingRegionModification().isPresent()) {
+            executionAttributes.putAttribute(AwsSignerExecutionAttribute.SIGNING_REGION,
+                                             configuredRequest.signingRegionModification().get());
+        } else {
+            executionAttributes.putAttribute(AwsSignerExecutionAttribute.SIGNING_REGION_SCOPE, RegionScope.GLOBAL);
+        }
 
         configuredRequest.signingServiceModification().ifPresent(
             name -> executionAttributes.putAttribute(AwsSignerExecutionAttribute.SERVICE_SIGNING_NAME, name));