Mozilla is continuing to improve the activity stream or the Firefox New Tab Page. The company has recently confirmed they’ll show sponsored content on new tab from Firefox 60 version onwards, meanwhile, the Highlights section on NTP now shows recent downloads. The feature is targeted for Firefox 61.
If you download a file in Firefox browser using the built-in download manager, that item will be added to Highlights, which when clicked the file containing folder will open. Downloaded item has the options to open file, open containing folder, Go to download page, Copy download link, Remove from history and Dismiss.

If you don’t want recent downloaded files to appear on New tab under Highlights, you can stop that from happening, here is how that can be done.
READ: Firefox 61: New Tab Page Settings moved to Home Section in Options
Firefox 61+: open New Tab as Blank Page
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Disable Recent Downloads in Highlights on New Tab Page in Firefox
1. Click on menu > Options
2. Home > Firefox Home Content > Highlights, uncheck ‘Most Recent Download’. You can also able to disable display of visited pages, bookmarks and Page Saved to Pocket in Highlights section.

Firefox 57: Remove Recent Highlights in the Library Menu
What’s your take on this change? Let us know in the comments.