[marcus]

JDownloader comes with the FlatLaf style which supports custom window decorations (not the OS one) as explained here: **External links are only visible to Support Staff****External links are only visible to Support Staff**.

At the end it says that it is enabled by default on Windows, but on Linux it requires a few more lines of code. The decoration should look like this theme: **External links are only visible to Support Staff****External links are only visible to Support Staff**, with the menu bar embedded.

I tried that theme on Linux and it doesn't have the decoration. Thanks.