Hello Julio, welcome to the forum!
I just wanted to let you know that we're currently investigating this issue; there's another open similar thread that we're simultaneously tracking.
As soon as we have more information about this, we'll let you all know.
And about the path generation. You can query uid instead of slug, and you’ll get the uid, but actually, if you've correctly set up your link resolver you will only have to query the url value and pass it to the path:
Thanks