Plugin upgrade issues, 4.2-alpha

Press This and Customizer Theme Switcher don’t show an “Installed” button in the plugin installer despite being installed. They don’t show an install/installed button. On plugins.php, they don’t have View Details links. Deleting and reinstalling fixes. Following visit plugin page after install throws a fatal.

A later incident with Customizer Theme Switcher.

#plugins, #updates, #upgradeinstall