Laura Behny of Attaboy Plumbing and at least one poster in the forums have noted what appears to be a new bug when clicking on the the “Google reviews” link in the pack results. Either a blank page is delivered or these very weird results are shown instead of the local G+ Page. It is not happening on all results and appears to be focused on SAB results.
Update: The bug seems to show regardless of how the page is accessed with most SAB pages that I have tested showing a blank page that include only their business name at the top and no content. Google has been notified of the bug. If you want to chime in at the forums at your comment to the existing post that has been elevated.Google Local Bug: Review/Plus Pages Not Loading For SAB Pages by Mike Blumenthal