Created attachment 7863
debug log file
xfwm 4.13.0 has no issues, 4.13.1 doesnt start: as it errors out on eventFilterAddWin().
DBG[event_filter.c:253] eventFilterAddWin(): error code: 2
Ignoring the error code allows it to start but then lots of things are broken at runtime, see attached debug log.
This is on OpenBSD where there's no DRI3/Xpresent and other fancy things:
Build Configuration for xfwm4 version 4.13.1 revision 942156e4:
Startup notification support: yes
XSync support: no
Render support: yes
Xrandr support: yes
Xpresent support: no
Embedded compositor: yes
Epoxy support: yes
KDE systray protocol proxy: no
Happy to provide more debug info or try patches ofc.
xi2 is available and built by default, so maybe something related to xi2 handling added in 6013f1ee ?
XI2 support is definitely the issue, as 4.13.1 works perfectly fine if if disable XI2 at build time by setting ac_cv_lib_Xi_XISelectEvents=no in the build env.
Data point - the gtk3 build configuration is the following:
GDK backends: x11
X11 extensions: XKB Xinerama XI2.2 XRANDR XFIXES Composite DAMAGE
So XI2 is enabled in gtk itself.
Might be fixed by https://bugzilla.xfce.org/attachment.cgi?id=7976
*** This bug has been marked as a duplicate of bug 14695 ***