Board Thread:New Features/@comment-8072-20201027185624/@comment-3218221-20201027190408

The October 16 Technical Update announced Link Suggest (assuming you're talking about Link Suggest) would return on Tuesday, aka the 20th. To be clear, Link Suggest is the feature that autocompletes/autosuggests article names when you're adding an interwiki link in Source Editor.

If this features is what you're talking about, then it should be functional now on your wiki. I can confirm that Link Suggest has returned (thank goodness) on the UCP-migrated wiki I admin (note: I use the 2010 editor). You may have to wait a couple seconds for a suggested link/article title to pop up--I think there's a smidgen of a delay compared to the instantaneous autocomplete on legacy wikis.

(Also, make sure you're not scrolled up too high; Link Suggest may have appeared off-screen if your cursor is too close to the bottom of the window.)