The buttons for interacting with a comment on a PR are slightly different (visually) to the ones for interacting with the PR itself. These should be in a buttonbar like the comment ones so they dont look out of place. Here is what it looks like now:
@ryanlerch isn't this fixed in https://pagure.io/pagure/pull-request/683 ?
The description in the PR actually says so, so closing this ticket :)