When creating IOS package with RemoteBuild, bCreateStubIPA is set to True by the following code.
So, CopyLocalizationsResources is not executed and BundleDisplayName is not localized.
Try to localize CFBundleDisplayName by referring to the following document. Note that the IOS package must be created by remote build.
expect : localization success
result : localization failed
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-173286 in the post.