Created attachment 178240 [details] Picture showing widget/panel/menu translucency differences SUMMARY Since upgrading to Plasma 6.3, my desktop widgets' backgrounds are noticeably darker than other desktop elements, like the panel or pop-up menus, when using a transparent/translucent Plasma style. This was not the case with previous versions of Plasma 6.x or 5.x. Note: The panel opacity is set to adaptive. The same happens if the panel opacity is set to translucent. STEPS TO REPRODUCE 1. Select a transparent/translucent Plasma style 2. Add a widget to the desktop (do not hide the widget background) 3. Observe the transparency/translucency difference between the widget background and the Plasma panel or right click/popup menu(s) OBSERVED RESULT Widget backgrounds are noticeably darker than the panel EXPECTED RESULT Widget backgrounds have the same level of transparency/translucency as the panel and menus SOFTWARE/OS VERSIONS (available in the Info Center app, or by running `kinfo` in a terminal window) Linux: EndeavourOS/Arch Linux KDE Plasma Version: 6.3.0 (Wayland) KDE Frameworks Version: 6.10.0 Qt Version: 6.8.2 ADDITIONAL INFORMATION This was confirmed on a Surface Pro 8 laptop with an Intel iGPU and an ASUS ROG Strix GL702-VM laptop with an NVIDIA GTX 1060 dedicated GPU. The attached picture is from the Surface Pro 8.
Ok, I just found out that themes need to be updated to work with Plasma 6.3. I installed some updated themes, like PurPurDark, and the widgets look just fine. Please close this bug report.