Semi-transparent black pixels at corners compared to native KDE rounding

[Hentioe]

I am trying out the KDE-Rounded-Corners effect and have noticed a visual issue when comparing it to KDE's native rounding effect.

Specifically, with KDE-Rounded-Corners, I see semi-transparent black pixels at the rounded corners, whereas the native KDE effect does not exhibit this (or appears to use white/edge-matching colors for blending).

Honestly, the native KDE effect looks more comfortable and natural to me personally. However, as is well-known, the "Korners bug" issue frequently regresses in the native implementation.

Is it possible to improve this aspect of the KDE-Rounded-Corners effect?

Additional Information

• Only the rounding feature of KDE-Rounded-Corners is enabled; all other settings are disabled
• The corner radius is set to exactly match the theme's native corner radius

KDE-Rounded-Corners:

Native:

[matinlotfali]

Nice observation. I will check it.

[matinlotfali]

Can you send me your configurations?
Also, does this issue happen with a non-fractional thickness?

[Kandelai]

I get these as well, only on the bottom corners, pretty profound. I assume it is because of the new changes in Plasma's 6.5 native rounded bottom corners?

[wxmup]

Can KDE-Round-Conrer use kde6.5 native SSD rounded corner in the feture?