Yes, I can also attest to this problem in Maya 2023, it does seem to basically be a focus problem where Maya does not respect the fact that you have the graph ed active.
Clicking into the time and value boxes at top left, which I use frequently, is not immediately respected, so attemping to cut and paste e.g keyframe values often does not work. Worse, this often results in something else (e.g geometry or an entire rig which happens to be selected at the time) getting copied into the scene instead when using ctrl + C and ctrl + V.
Seems like you have to click into these boxes more than once, or wait a second, or something. There are various other problems -- hitting F will bring up another window, my anim curve layout gets changed etc.
It's incredibly detrimental to workflow.
I'm on a dual monitor setup with a RTX3080, and like most people want my main work area on the left and menus and other windows on the right. I've had this kind of problem when working on remote machines where it's been necessary to click twice to get focus, but never on a local box.
