HASHBYTES fails on SQL Server 2012 but not 2016

I'm using the following query to get information about CLR assemblies attached to a SQL Server database.

SELECT
	[assemblies].[name],
	[assemblies].[principal_id],
	[database_principals].[name] AS [principal_name],
	[assemblies].[assembly_id],
	[permission_set_desc],
	[is_visible],
	[assembly_files].[name] AS [assembly_file_name],
	ASSEMBLYPROPERTY([sys].[assemblies].[name], 'SimpleName') AS [simple_name],
	[clr_name],
	[content],
	HASHBYTES(N'SHA2_512', [assembly_files].[content]) AS [SHA512HASH]
FROM
	[sys].[assemblies]
INNER JOIN
	[sys].[database_principals] ON
	[sys].[database_principals].[principal_id] = [sys].[assemblies].[principal_id]
INNER JOIN
	[sys].[assembly_files] ON
	[sys].[assembly_files].[assembly_id] = [sys].[assemblies].[assembly_id]
WHERE
	[is_user_defined] = 1

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I have two identical databases (structurally, though the data they contain is different). One is attached to a SQL Server 2012 instance. The other is attached to a SQL Server 2016 instance. Here is the full @@Version information for each.

Microsoft SQL Server 2012 (SP1) - 11.0.3156.0 (X64)   May  4 2015 18:48:09   Copyright (c) Microsoft Corporation  Enterprise Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: ) 

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Microsoft SQL Server 2016 (SP2) (KB4052908) - 13.0.5026.0 (X64)   Mar 18 2018 09:11:49   Copyright (c) Microsoft Corporation  Enterprise Edition (64-bit) on Windows Server 2012 R2 Standard 6.3 <X64> (Build 9600: ) (Hypervisor) 

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I'm hoping that there's some kind of known bug with using HASHBYTES on a SQL Server 2012 instance but I can't find any documentation to that effect. Can anyone give me a clue as to why it fails on the 2012 instance but works fine on the 2016 instance?