I am working on a sharepoint online classic team site collection, and inside my site collection classic page, i have added a "content search" web part, to show all the sub-sites, here is my query inside the "content search" web part:-
path:"https://****.sharepoint.com/sites/projects/*" contentclass:STS_Web -Path:"https://***.sharepoint.com/sites/projects/test/" -Title:"Deleted Project" -Title:"Test"
And the above was working very well, but today i access the site page and i have noted that the "Content search" web part is not showing any results. now if i remove the
contentclass:STS_Web from the query, i will get everything. so seems for a reason or another
contentclass:STS_Web is breaking my query,, not sure if sharepoint online no more support
EDIT--FIX i have re-index the site collection's root site, and now i content search web part is working well. looks a temp problem from sharepoint online!!