xfwm is the window manager for Xfce
See NEWS for details on changes and fixes made in the current release.
From source:
% cd xfwm4
% meson setup build
% meson compile -C build
% meson install -C build
From release tarball:
% tar xf xfwm4-<version>.tar.xz
% cd xfwm4-<version>
% meson setup build
% meson compile -C build
% meson install -C build
Visit the reporting bugs page to view currently open bug reports and instructions on reporting new bugs or submitting bugfixes.