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This example seems like something you shouldn't be able to do. Now you have 2 private '#x' properties with unique values. It's very surprising.

Intuitively, you would expect the subclass to essentially be saying "my version of this variable is equal to 200, not 100". Then both calls should return the same result (200)

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The spec (and the committee) has defined "private fields" to mean that anything outside of the defining class (including subclasses) should have no knowledge of them. If your subclass needs to know about the property, make it "soft private" by prefixing it with _.

Another comment in this thread noted this is how Java works. I very much agree with you, but I guess there are different interpretations of how this should behave.

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