clarify some bit

src/i18n/en.json

@@ -707,7 +707,7 @@
     "notification_blocks": "Blocking a user stops all notifications as well as unsubscribes them.",
     "enable_web_push_notifications": "Enable web push notifications",
     "enable_web_push_always_show": "Always show web push notifications",
-    "enable_web_push_always_show_tip": "Some browsers (Chromium, Chrome) require that push messages always result in a notification, otherwise generic 'Website was updated in background' is shown, enable this to prevent this notification from showing. Can result in showing duplicate notifications on other browsers.",
+    "enable_web_push_always_show_tip": "Some browsers (Chromium, Chrome) require that push messages always result in a notification, otherwise generic 'Website was updated in background' is shown, enable this to prevent this notification from showing, as Chrome seem to hide push notifications if tab is in focus. Can result in showing duplicate notifications on other browsers.",
     "more_settings": "More settings",
     "style": {
       "switcher": {