Is @live attribute working yet?

[elfstone]

On Sunday, 24 April 2022 at 11:36:29 UTC, Paolo Invernizzi wrote:
> On Sunday, 24 April 2022 at 09:31:40 UTC, elfstone wrote:
>>     [...]
>
> You need to use the flag `-preview=dip1021`
>
>   test.d(8,30): Error: variable `test.test.p` assigning to 
> Owner without disposing of owned value

Weird, it's still not working here. I have tried the flag with 
dub, and dmd.