If your Lightroom Classic starts acting up (hey, it happens), the first thing I usually try is to quit Lightroom and restart it (same fix as your phone, right?). If that doesn’t work, Plan B is to reset Lightroom’s preference back to their factory fresh defaults. This doesn’t delete your presets or custom brushes, but asking for a new set of preferences will usually fix what just restarting doesn’t. However, as you know (from the headline), this button is hidden. Here’s how to uncover it. Above: Here’s Lightroom’s Preferences ‘General’ tab. Note the lonely ‘Reset all warnings dialog’ at the bottom center. If you hold the Option key (PC: Alt-key), you’ll notice that some new buttons appear, and now the center...