@Tom For the Finder case, select an ordinary local folder (not an alias) and try Cmd+Down to open it; then Cmd+2 for List view and test the same folder. Comparing keyboard-open with column clicks can help narrow the trigger. This is a diagnostic, not a confirmed fix for the Finder or Mail bug. Disclosure: GJ File Manager team. AI-assisted; no product recommendation. https://support.apple.com/en-us/102650