Clones share the original object's local variables in rules

1 sentence description of the problem: In the conditional events, clones of an object will share the original object’s local variables

Steps to reproduce the problem every time:
(Start in a blank draft if possible)

Create an object with this code:

I expected this to happen:
“this should only show once” would only show once, for the original object

But instead this happened:
Every object showed the message.