i had scenes working before the latest update, now i can't even add them to buttons. I have 1 scene defined, and i used to be able to have them on buttons. now the scenes don't even show up when i go to "Activate Scene".
First, it appears you have screen reader support turned on. If you're not using one, I'd go to "Settings" and turn this off--it's the "Enable screen reading accessibility" at the top and is meant for software like JAWS. If this is intentional, please ignore my idea (but if not, one issue you'll run into if trying to use the GUI in the traditional point-and-click way is that the browser will not always render everything the screen reader can in fact "see").
Otherwise, maybe you could try a different browser or clear your cache. I am not able to reproduce this problem in Rule 5.0 on my hub:
Can you verify that the scene appears in your "Devices" list and that it's using Hubitat's built-in "Scene Activator" driver (this would appear under "Type" on the device page and in the device list; and it should be what it is, as Hubitat creates these as such, unless you changed it...but it's worth checking anyway).