All:Similar to this post, I've created a view controller scene in a macOS app to which I've added a stock NSTableView. I've changed nothing, meaning it has regular highlighting, allows column selection. Even though I can click to select a column and get that selected column index in code, the selection is never highlighted.I'm using Xcode 8.2.1 with a newly-created document-based macOS application project. I do nothing to the table view (aside from asking it to reloadData() ) in code. The standard project's setup means the root view of this view controller (the window's content view controller) is layer-backed. I've tried deleting and re-adding the table view, tried toggling highlighting and column selectability (including toggling "allows multiple") in code and in IB, but nothing seems to be working. I find this ... extremely odd after years of Cocoa development (admittedly, on apps that support much older verisons of OS X).Any suggestions?