Hi Michael,
"""""""""""It maintains a memory of what the object visibility was before the isolate and when you run Isolate a second time, everything will be restored to its pre-Isolate state.""""

Hopefully I am not overly confused, but I am not good at tracing logic

Make a few items. 5 or 6.

select 2 and right click to isolate

Deselect everything and left click hide button to bring all objects back

THIS: "Right click Isolate now requires 2 clicks?"

Can you verify THIS?