Just to be sure: are you searching for Interface name, or Function name? You’ll need to search for function name to get it to show up as an Event in context menu. And I’m sure you’ve checked, but is interface is still implemented, correct?
Otherwise, do you recall what changes you made that might involve BPI between yesterday and today? Perhaps a change to BPI itself, or in BP that’s using it? Does this now happen with new BPI/BP combos in your project, or just one you noticed it with? And does it happen in new projects as well?
Without a repro case, there isn’t much we can do. polkovnikov above mentioned that restarting editor seemed to resolve issue when this occurs, can you confirm? Thanks!