This behaviour depends on the browser and whether you install or update your plugin.
See the table below for reference : 
Browser  | Install | Update | 
|---|---|---|
| Internet Explorer | Page refresh needed | Browser restart needed | 
| Safari 10 & lower | No refresh needed, AdapterJS auto-reloads the plugin list  | Browser restart needed  | 
| Safari 11 (with plugin) | No refresh needed, AdapterJS auto-reloads the plugin list  | Browser restart needed  |