[longstation]

I am same there (using KDE Plasma with global menu). Recently, with VSCode's menu on title bar, it seems to have started a trend doing so. For example, JetBrain's IDEs are also designed that way. I found the term for that, it's called LIM (locally integrated menu). Now, Unity has done that many years ago. If I remember correctly, the behavior was: when maximized, it behaves like a global menu; when not, it's a LIM.

Fortunately, there's a PR for implementing such things in KDE Plasma. Here is the discussion [1]. Right now, you can use it, but it probably won't be merged into the main branch soon.

PR: https://invent.kde.org/plasma/breeze/-/merge_requests/126

There's also a KDE theme the PR draws inspiration on (which you can use for KDE now): https://github.com/Zren/material-decoration

[mikewhy]

This seems like a weird half-step between "headerbars" / client side decorations / hamburger menus. KDE Maui is going that direction: https://mauikit.org/apps/

Sadly it just seems to be more like a custom window decoration that only does shadows (no actual title bar) and regular KDE headers, no actual window controls / CSD.