Each time I select some text, whether using the mouse or the keyboard, xfce4-clipman-plugin logs this entry: "gdk_window_get_device_position_double: assertion 'GDK_IS_WINDOW (window)' failed", immediately followed by "Source ID XXXX was not found when attempting to remove it", where XXXX is a four digit number.
Created attachment 9403 fix (xfce4-clipman:xxxx): Gdk-CRITICAL **: xx:xx:xx.xxx: gdk_window_get_device_position_double: assertion 'GDK_IS_WINDOW (window)' failed Meet the same bug. I found out that it is caused by passing NULL to the first parameter of gdk_window_get_device_position() https://git.xfce.org/panel-plugins/xfce4-clipman-plugin/tree/x11-clipboard-manager/gsd-clipboard-manager.c#n225
Simon Steinbeiss referenced this bugreport in commit 9e9d35997bfab90016155434f79e4337e3bf0a00 Fix getting modifier in gsd-clipboard-manager (Bug #14642) https://git.xfce.org/panel-plugins/xfce4-clipman-plugin/commit?id=9e9d35997bfab90016155434f79e4337e3bf0a00
Thanks, pushed.