Forum Discussion
Disabling the Hover State when non-button Object is Disabled
It looks like the Grouped nature of your buttons is creating the issue. The disabled state works as expected when not grouped. Instead of grouping, you may consider adding the multiple objects to the Normal State of an object.
I did a try with buttons and I was able to get it working. Oddly, I had to play around a bit even then as one of the buttons was still doing hover effects when disabled (so I copied and pasted one of the other buttons that was working). Then with the newly copied button I noticed a hover effect was still showing up on two of the other buttons (the stroke color was changing) so I copied and pasted the first button in place of those and it finally worked the way I wanted for all of them.
It still seems a bit like it's a buggy feature.