Yes, it's very early into the new phase to report bugs, but technically this is a bug in the definition phase!
Once a question is moved to the Commitment Phase, you can't expand the hidden comments shown at the old Definition Phase link. For example, the Gaming proposal has 30 comments past what is shown, which is greater than how many I saw before. But if I click "show 30 more comments", nothing happens!
This is also the case for hidden comments on the example questions, and I tested Apocalypse Defense as well. However, for Food and Cooking, which is still in the definition phase, the expansion works fine.