SUMMARY

It would be nice to have an option to make the new window outline optional. It is a nice feature for some use cases (e.g., dark themes), but there are other scenarios in which it creates visual noise (e.g., light themes with only a few dark windows, such as konsole).

Also, it is kind of confusing with the general option "Window border size" = "No borders" within "Window Decorations". I know technically this new feature is not a border but an outline of another element, but the problem is most users don't understand the difference.