Hello, On Thu, 31 Aug 2023 09:18:21 -0400 z411 <z...@omaera.org> wrote: > I use KDE Plasma under Wayland and I've always used the window system > decorations option in order to make my desktop visually consistent. > > But after updating to 4.9.3, this option has suddenly disappeared. I > asked upstream and they said the option was still there but it was most > probably disabled by the package maintainer, so I come here to humbly ask > to re-enable it if possible.
Set the QT_QPA_PLATFORM environment variable to "xcb" value before running Telegram Desktop. And the setting will reappear because of XWayland. In genuine Wayland there is no such thing as system decorations. $ QT_QPA_PLATFORM=xcb telegram-desktop For some reason, that's not default anymore.