Ok, I was not believing it in the first place, but I noticed the same thing using my script.
I was rolling a lot the last several days to finally cash in all my reward points with 1000% boni.

Today around 5:42 UTC I rolled and the script alerted me!
The hash of the server seed before the roll was "e0dae012326019db972797e41a3edee109d0b9c8859c704ac9f984fcb3251729".
After the roll the hash of the pervious server seed was "81c07a9aba1b10da9a757d339a3e05a5cb7466d13c0c8abf3e72bb3b9f85aa7e".

It is obvious that the server seed hash changed and therefore also the server seed changed and the result of the roll changed!
The server seed of the second hash is "7d65304764de4888be843be666980845aa129f8b95eb490e66aa42017b080eb0".
My client seed was "21aeb50085fe13a3e35f1052acb0f91fdeab588264f2fc64462fd071b0fcae6e".
The nonce of the roll was 3658.
This leads to a 1507 being rolled (https://s3.amazonaws.com/roll-verifier/verify.html?server_seed=7d65304764de4888be843be666980845aa129f8b95eb490e66aa42017b080eb0&client_seed=21aeb50085fe13a3e35f1052acb0f91fdeab588264f2fc64462fd071b0fcae6e&server_seed_hash=81c07a9aba1b10da9a757d339a3e05a5cb7466d13c0c8abf3e72bb3b9f85aa7e&nonce=3658)

I will definitly report this to TheQuin and ask him about the server seed of the first hash, because what I really want to know now is what the result would have been with the real server seed!

I know that there is no way prooving that I did not fake these numbers, but I cannot think of a way to do so.
I attach an pdf with all the hashs recorded by my script to this post, so that you can see I actually recorded them. The upper ones are the most recent ones and the changed ones are marked red.

The link to the pdf: https://docdro.id/gROgDL2