Android... 7.0 I think?
Previous to the last update there was a search bar right at the top of the "Songs" screen (which has now been replaced by "Liked").
On the new version you must hit the small icon in the top corner, and then select "Search in Liked" instead. This is a ridiculous negative change to usability with no advantage and makes me think Spotify must not be doing any real thinking about their UI flow, just changing it for the sake of changing it.
Two steps just to get to the search bar that used to be right there at any time. Just, why?