Kirigami scrollbars are invisible or hard to see with Plastik Dark + PlastikStyle.

[poudink]

No idea why. It wasn't a problem until I rebuilt PlastikStyle a few minutes ago. This doesn't seem to be PlastikStyle regression, since I tried going back to the commit I had been using before and that didn't fix it. This only seems to happen with the Plastik Dark color scheme and another similar-looking color scheme I have called Zion (Reversed). The scrollbars are invisible in System Settings and System Monitor and quite hard to see in Elisa. I don't know whether this is a problem with the color scheme (since it was working fine before I rebuilt PlastikStyle and most other color schemes are working fine), qqc2-desktop-style (since it's only in Kirigami apps) or PlastikStyle.

EDIT: Looks like it depends on the color of the background the scrollbar appears in front of.

[poudink]

This is also a problem with Plastique from qt5-styleplugins. This isn't a problem with Plastic from QtCurve, though that is a much less accurate port of Plastik.

[MartinF99]

This is pretty much an issue with Plastique, (and with my port). Sadly to draw lines (borders, frames ...) The style tends to use QColor::lighter or QColor::darker, with button colors etc. (To create a slight "3d" effect.) This sadly makes dark themes render frames really badly, which makes some gradients illegible with The QStyle. (I reccommend only light color schemes for now) (or color schemes that use non-black colors for buttons and windows.)