I believe that prevents hovering over it to get a tooltip. I noticed when I tried to use the inspector element picker to observe it and couldn't reach it that way.
pointer-events: none should probably only be used for things that are transparent overlays or purely presentational, not just for real controls that are temporarily in a disabled state.
pointer-events:none is a inexpensive way to make the icon not clickable, which is what disabled should do. Please re-open if this causes a practical problem for accessibility.
I believe that prevents hovering over it to get a tooltip. I noticed when I tried to use the inspector element picker to observe it and couldn't reach it that way.
pointer-events: none should probably only be used for things that are transparent overlays or purely presentational, not just for real controls that are temporarily in a disabled state.