When scroll wheel clicking the Refresh button in Firefox, the browser opens the current page in a new tab and immediately switches focus to it.
Rather than hardcoding the focus-switch, Firefox should offer this behavior as an optional feature:
A toggle should be available in about:config (e.g., browser.tabs.middleClickRefreshSwitchToTab) for advanced users.
In Google Chrome, middle-clicking toolbar buttons like Refresh or Bookmarks typically opens the new tab in the background by default, without switching focus. This would is a good feature to add for people coming from Google Chrome.
