Roon Search: "preview" and "all results" do not correspond

I have noted a problem with Roon Search:
“preview” and “all results” do not correspond.
For example if i look for will sparks i note in the preview 2 composers, willy and willie sparks


but if i see all the results the composers disappear:

this happens most of the times with artists or composers.
(or at least i search most of the times to artists… and i’ve noted this)