Most recent documents - Missing

HI,

I have several sites with one hub sites connected to all team sites. When uploading files to the library in one site it shows up in the hub site "most recent documents" web part and disappears after 10 minutes. We want it to show up in most recent documents and stay there. Have checked the web part edit, and filter is on "earlier this month" All type of documents. 

Is this a bug?