We have Enabling issues on a button set (Brooklyn Update 1 - Iteration 1.) Had a page title button built the exact same way that behaved fine, but the Button Set Button would not enable when the conditions were met. I built a new page on a standard object to repro it, and the button set behaved perfectly. So we saw the same issue… existing pages it broke, new pages working just fine. We scrapped the button set and went with the page title button because we needed to move on. Our situation had NO Remove All Rows actions, no wrappers, etc. Just a button set sitting in a responsive grid that would not enable on a simple condition - when a reference field on the same model was not Null (user made a selection, so ok to click the button now.)
