Trying to use an AWS VPC endpoint (PrivateLink) as the plugin's "Custom Endpoint" results in the exception below.

com.amazonaws.services.s3.model.AmazonS3Exception: The specified bucket does not exist (Service: Amazon S3; Status Code: 404; Error Code: NoSuchBucket; Request ID: ...; S3 Extended Request ID: ...; Proxy: null), S3 Extended Request ID: ...
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1879)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1418)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1387)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1157)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:814)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:781)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:755)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:715)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:697)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:561)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:541)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5470)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5417)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5411)
at com.amazonaws.services.s3.AmazonS3Client.getBucketLocation(AmazonS3Client.java:1048)
at com.amazonaws.services.s3.AmazonS3Client.getBucketLocation(AmazonS3Client.java:1054)
at io.jenkins.plugins.artifact_manager_jclouds.s3.S3BlobStoreConfig.checkGetBucketLocation(S3BlobStoreConfig.java:398)
at io.jenkins.plugins.artifact_manager_jclouds.s3.S3BlobStoreConfig.doValidateS3BucketConfig(S3BlobStoreConfig.java:426)