sadams101 Posted February 9 Share Posted February 9 PageSpeed Insights is now making a big deal out of the use of UnloadHandler and "Registers an unload listener" in root_library.js. My scoring for Best Practices went from ~95 to ~78 overnight. Are you aware of this, and if so, what is the timeframe for updating this?  Link to comment Share on other sites More sharing options...
Jim M Posted February 9 Share Posted February 9 This may be a topic you will want to read. Short summary is that we're aware of it but as it is an engrained dependency, it isn't something we can rip out willy nilly 🙂 .  Link to comment Share on other sites More sharing options...
sadams101 Posted February 9 Author Share Posted February 9 Apparently it will not be supported by browsers for much longer, so you may want to put this on your front burner. Since it is showing up now in PageSpeed Insights with a much higher penalty than before, it has also become a bigger negative ranking factor. Link to comment Share on other sites More sharing options...
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