Does the KeyPairGenerator class behave differently in Java 1.6 and Java 1.8?

Question

I am trying to update an old Java class that generates a signature. It uses the DSA ecnryption algorithm of KeyPairGenerator and a custom seed from SecureRandom class.

KeyPairGenerator generator;
generator = KeyPairGenerator.getInstance("DSA");
byte[] seed = { '1', '2', '3'}; // custom seed
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
secureRandom.setSeed(seed);
generator .initialize(1024, secureRandom);
KeyPair keyPair = generator.generateKeyPair();

The issue is that it generates different signatures in the end, depending if I compile it with Java 6 or Java 8. Currently only Java 6 is working and accepted by the server.

My question is, does anyone have any more information if the behavior of one of these classes changed from version updates? Is there a way I can make this class generate the same keypairs in Java 8, as it is doing in Java 6?