Formerly, after having past the recording ID to a search field (during Add Release / Recordings), I received immediately:

• a correct recording with a green background in the search field
• this same (sole) recording below the search field
• this same recording in the Tracklist table.

Now, after having past the recording ID, I receive in the search field sometimes a correct recording (when it's a sole in database), sometimes a wrong recording (e.g., by other artist), and always:

• the background of search field is grey
• no recordings below the search field
• no recording in Tracklist table.

I have to push the magnifier icon in the search field, and I receive (instead of a sole recording with this ID) a list of recordings, sometimes by different artists.
What's happened to the recording search?