That's been the case for a LONG time. If you have below a certain amount of sats in your account, they drop the lowest reward by half. Which, at the current BTC price, the normal reward is 2, but drop that by half, you get 1.

They are incentivizing you to have a certain amount of sats in your account, kinda like what they do for interest. I forget what the level is off the top of my head, but they also have a few other ways to raise the lowest reward.