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?)

@greenmints I'd suggest, creating another windows user (if necessary), open strawberry with that login and finding that user's strawberry.conf. You'll see it has a section [SerializedSmartPlaylists]
copy that section (without SMP running) into your strawberry.conf in the same place as the current, presumably empty, one.

@kangaroo5496 Maybe a way of getting part of the way to this would be an addition to the context menu in the playlist saying 'Insert rest of Album to playlist'?