Avant last, Chromium (but also Firefox).
when the tab (or Avant Browser itself) isn't on focus, document.hidden is still false.
this can save a lot of CPU, as the HTML5 graphics rendeders use this variable to stop animations and less-freq updates when the tab isn't active.
https://developer.mozilla.org/en-US/doc ... ent/hidden
Avant do not change document.hidden when tabs is hidden
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