I use focus-follows-mouse with raise-on-focus turned off. On a cluttered desktop, I normally will left-click a window in the tasklist in order to (1) restore it (if it's minimized) and (2) raise it. I came to depend on this behavior from many years of using KDE, and it seems Xfce works essentially the same, but there seems to be a bug with it in one situation: If the window button that I left-click on currently has focus (because it was the last window I rolled over when moving my mouse to the panel), then it won't get raised. I assume that this must be a bug, as it doesn't make much sense that someone using focus-follows-mouse would want a window not to be raised on left-click just because that window happened to be the last one their mouse rolled over before the pointer got into the panel. In case anything isn't clear, there is some additional discussion of this between myself and ToZ at: https://forum.xfce.org/viewtopic.php?id=10977 Also, I recorded a video of the problem at: https://www.youtube.com/watch?v=YukSJZTgBBs (Note how the first time I left-click on Thunderbird's tasklist entry, it doesn't get raised because my mouse hit it on the way up; but the second time I left-click it, it does, because I avoided it on the way up)
Forgot to mention, this problem also requires that "Middle click action" be set to "Minimize Window".
I can confirm this bug. Reporting from Ubuntu 16.04, Xfce 4.12. "Window buttons" behavior becomes buggy when "Middle Click Action" is set to "Minimize window". Normal behavior: Left click raises minimized windows. Buggy behavior: Left click on minimized windows does nothing.
Created attachment 7233 Patch to xfce4-panel-4.12.1/plugins/tasklist/tasklist-widget.c
Bug still exists in 4.12.1. I attached the patch that I've been using to fix the issue for myself.
Still exists in 4.13.3.
I think this is a duplicate of #12186 and the root cause it that currently "window buttons" item in xfce4 panel - aka "the taskbar" in windows os language - indicates the focused window, while we need it to indicate the raised window.
I'm not so sure that this is related to that bug. This one seems like a very simple logic error in the code to me. Check out the patch I posted, it fixes this problem.
Created attachment 8682 Fix for this issue in 4.13.5 Issue still exists in 4.13.5. New patch attached as the relevant code changed a bit.
Still present in 4.14.
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