Created attachment 114414 [details] Right side of the taskbar After changing the resolution to smaller and returning the previous one, in the taskbar there are holes: on the bottom along the entire length, small on the right. On the screenshot you can see the blue color of the desktop.
Please include frameworks version. You can find it in kinfocenter.
KDE Plasma: 5.12.6 KDE Frameworks: 5.47.0 Qt: 5.9.6 Kernel: 4.17.9-100.fc27.x86_64 Dual monitor: DVI: 1920×1080 (main) HDMI: 1680×1050 (TV)
Thanks for the update. Changing status.
... now for real.
Similar rendering issue https://bugs.kde.org/show_bug.cgi?id=390255
Since fixed in newer frameworks. You might need to wipe your plasma SVG cache