Here's a small database to test: https://owncloud.matzerath-online.net/index.php/s/WuQeNpjH1ygSrdO
One way to test:
Open artist view, double click an artist, if this works, go back and try another artist.
This worked never more than five times for me, than it failed.
Odd: the same artist might work at one time, fail at another - and no artist failed two times in a row.
Another way to test (works almost every time):
Open artist details for an artist, restart Neon.
Side effect of the configure background fix. I'm analysing it further.
Hopefully fixed in:
I would not reproduce case one, case two was fully reproducable.