you can usually reference that object, and use that object in certain ways after it is destroyed but before the next tick
for instance you can destroy a sprite, and then tell the same sprite to spawn another object
I haven't personally tested all the instances where this works, and what types of actions, conditions, and expressions still work until the end of the tick
but I believe ashley said that this will not be fixed in Construct 1,
because it is deeply entrenched in the picking, or event logic
after the tick, the object is completely destroyed in RAM
so, it's not invisible or off-screen, it's really gone