Preference center slots unavailable in the new builder

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My Mautic version is: v4.4.7
My PHP version is: 7.4

Hi,
I have followed some tutorials to create a landing page for a custom preference center, I enabled the option “Set as preference center page”, when editing in the new builder, I can’t find the preference center slots, I know I can use tokens, but with tokens I can’t edit the labels.
I found that this issue is pending in GitHub, so, I wonder if it’s now fixed or if there is a temporary fix.
Best regards.