Yes.
The thing is this happened all week up until about 8:30 for both SDD and Rise. But I can understand why a lot of people would not have noticed. The thing is at 7 AM the most you can do is select your first Genie + and 2 ILL's if you choose. And then there is no option but to wait until 11 AM for your next ride choice (if available). So it is really not like I am risking losing anything for the first hour refreshing constantly. Especially when sitting at home and not at the parks. this is why, on our first HS day I will set an alarm for 6:30, walk down to the food court, get myself some coffee, hang out and wait. And at 7:00 AM on my device I will start to look. I will book the first one I see (SDD with Genie + or Rise individually) and I will keep refreshing until I get a time. Then once done Ill keep refreshing until I get the other or have my wife user her phone to do so. There is nothing else we are looking for. We are not worried about settling for RNRC or ToT to secure it. Its a risk I'm willing to take that one of them is available at 11 am (which there has been at least 1 all week).
But you did bring up an interesting negative aspect where the times changed or a ride was no longer available when selecting it. So we will see.