The system-lock-screen icon loses its line-art appearance with the Plasma theme when rendered at units.iconSizes.large size. Instead, it looks like a screen with a lock in it. It looks fine when its size is units.iconSizes.medium. See attached screenshots. The problem does not reproduce with the Oxygen theme.
Created attachment 111035 [details] Icon looks fine at units.iconSizes.medium size
Created attachment 111036 [details] Icon looks wrong at units.iconSizes.large size
Can reproduce in: Plasma: 5.12.2 Apps: 17.12.2 Frameworks: 5.43.0 Qt: 5.10.1 Kernel: 4.14.22-1-MANJARO OS: Netrunner Rolling Breeze theme - Application Dashboard has different Lock icon, Application Launcher has the same styled Lock icon
What would be the way to solve this issue? Are there graphics needed?
*** This bug has been marked as a duplicate of bug 381960 ***
Unless you object, I'd prefer not to mark this as a duplicate, as it's a narrow, targeted issue for one specific icon, whereas that other bug is a general bug describing a broad category of issues, and as such is unfortunately much less likely to be fixed... :(
This has since been fixed.