New handbook search not working

Today, half the world is experiencing unexpected errors on the internet. May or may not be related, of course.
https://www.thousandeyes.com/outages/

https://musescore.org/en/search/site just doesn't work, and since a t least 3 days

You can use google search instead:
to search the MS4 handbook for 'slur'
site:https://https://musescore.org/en/handbook/4 slur