Counter list
The same island rendered in a loop: each copy hydrates with its own state.
Count: 0
Initial prop: 0
Doubled: 0
Sign: zero
Count: 10
Initial prop: 10
Doubled: 20
Sign: positive
Count: 20
Initial prop: 20
Doubled: 40
Sign: positive
The same island rendered in a loop: each copy hydrates with its own state.
Initial prop: 0
Doubled: 0
Sign: zero
Initial prop: 10
Doubled: 20
Sign: positive
Initial prop: 20
Doubled: 40
Sign: positive