Search box just stops working after one letter

So I've been dealing with this weird issue for a while now. Every time I try to search for something—either in the taskbar or in File Explorer—it just locks up.

In File Explorer, I can only type one letter and then it stops responding. Can't type anything else, can't do anything with it.

In the taskbar search, I can type a full word, but I can't actually click or select any of the results that come up. Files, apps, settings—none of them are clickable.

Anyone else run into this or know what's causing it? It's getting pretty frustrating.