And I can easily replicate this - from within the same session - by creating a smart playlist - with a search term of 'not in the last 3 years', show only the first 20 songs, sort by album, save it. And then edit that new playlist.

@jonas Reply sent my message - thanks!

With 1.0.15 (thanks for the 'show in collection' group fix here ) if I edit one of my smart playlists I'm getting the following SQL error:
Unable to execute SQL query: No query Unable to fetch row<br />Failed query: SELECT ROWID,title, album, artist, albumartist, track, disc, year, originalyear, genre, compilation, composer, performer, grouping, comment, lyrics, artist_id, album_id, song_id, beginning, length, bitrate, samplerate, bitdepth, source, directory_id, url, filetype, filesize, mtime, ctime, unavailable, fingerprint, playcount, skipcount, lastplayed, lastseen, compilation_detected, compilation_on, compilation_off, compilation_effective, art_automatic, art_manual, effective_albumartist, effective_originalyear, cue_path, rating FROM songs WHERE (DATE(ctime, 'unixepoch', 'localtime') LIKE '%DATE(1, 'unixepoch', 'localtime')%' AND playcount LIKE '%0%') AND unavailable = 0 ORDER BY albumartist DESC
'No query'? And, inevitably no tracks are shown. Existing playlists built on those still appear to populate in dynamic mode.

@jonas In my case I think it's something to do with the grouping, I've set it to group by album and nothing is shown, if I change it to group by Album artist/Album tracks appear - I notice you ask about group settings above, am I misunderstanding the function of this setting?

@jonas Maybe I'm confusing the issue, but it seems that this issue https://forum.strawberrymusicplayer.org/topic/963/collection-search-not-always-working/3?_=1676367650199 which I reported is similar?

Thanks - the database integrity check passed, shut down strawberry, and recreated songs_fts but on restarting I see the same problem. Full collection rescan?

Maybe related after the restart I was trying various strings in the search bar and SMP crashed on me. Last line on .xsession-errors (maybe from SMP) was kf.i18n: "1 instead of 2 arguments to message {by %1 (%2)} supplied before conversion."

I'm not sure when this started to happen but I'm seeing recently that, in some cases, context clicking on a track in a playlist and selecting 'show in collection' doesn't show the track, or others in the same album. Also if I then edit the search string to reduce it to a minimum the track still isn't shown. I do have "Show -> Entire collection' enabled. It is as if the track has fallen out of the collection.
If I select 'Show in file browser' the track is shown and I can drag into the playlist. Then 'edit track information' doesn't show anything untoward.
An example 'show in collection' string is "artist:Francis Poulenc album:Les Mamelles de Tiresias, Lyon 11" I reduce it down to Lyon - without an album prefix and still nothing.
strawberry Version 1.0.14

It would be nice to have the summary tab enabled (as view only) when editing multiple tracks - so you can see how long that album is - was possible in amarok but disable in clementine and hence strawberry. You can select the multiple tracks in a playlist and see the length but I'm thinking here of viewing in the collection without the necessity of adding it to a playlist,

The collection filter allows you to say artist:ANO and various other keywords, I've moved from amarok where there's a greater number of possibilities, ones that I miss are playcount: and lastplayed: I think strawberry took over clemntine's subset here - would an enhancement along these lines be possible, or am I missing another way of doing this?
I realise you can create a playlist using these criteria but then that's a very flat view of the required search option

@robertklsz This would be very good to have for "classical" collections so that e.g symphony movements were kept together (but also might want to be able to sometimes play just one of the tracks?)