This is still an issue in CC 2018. Each time I update the TOC my buttons, which are Go to Destination, change to all going to the first listed bookmark, by alphabet. So in my case every button then goes to "Additional Tools", but they don't even go to that when an interactive pdf is created.
I've changed the destination for these buttons so many times - and it's not just this one document. Every document that has buttons has this problem.
I followed the instructions regarding checking "Make Text Anchor in Source Paragraph" in the TOC panel - but that didn't seem to make any difference.
This is really frustrating!