I did some searching in the upstream bug tracker and found these to be related:
https://bugzilla.xfce.org/show_bug.cgi?id=8806 - this is how I understand the original description of this bug https://bugzilla.xfce.org/show_bug.cgi?id=9995 and https://bugzilla.xfce.org/show_bug.cgi?id=10725 - this so me seems like the comments #2 and #3. I'm alo experiencing this. The last Xfce bug report (10725) contains detailed info on why and how is the bug there. ** Bug watch added: Xfce Bugzilla #8806 https://bugzilla.xfce.org/show_bug.cgi?id=8806 ** Bug watch added: Xfce Bugzilla #9995 https://bugzilla.xfce.org/show_bug.cgi?id=9995 ** Bug watch added: Xfce Bugzilla #10725 https://bugzilla.xfce.org/show_bug.cgi?id=10725 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1200364 Title: Not displaying correct windows in Window Buttons when using multiple Window Buttons applets on multimonitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/1200364/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
