Plasma 6: Lock screen renders black (troubleshooting help)

Not sure it is a packaging issue. It seems to me like it is correlated with the wine32:i386 being installed. Maybe one additional test in future versions of kde neon is if a system with steam (and i386 architecture packages installed) can be upgraded without issues.

See also this KDE Neon cannot be installed wine winehq-stable - #7 by gusarg81