Like the other person which I put a link to the post. This could very well be your 1st time simply experiencing extremely bad RNG. because it is RNG based it is very hard to prove one way or another if something has changed or there is a bug without massive testing. ((You would need a very large sample size from before the problem happened as the control, and then another very large sample size after the problem happened to compare the results to, and because the situation contains RNG, I wouldn’t personally settle for anything under 500 tests per sample size to try to find proof and even then, its RNG, which makes it very hard to show it as proof anyway. and at the end of the day isn’t worth the effort of trying to prove something that might be impossible to prove.)).