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Dragging a panel window button turns external panel plugin black


Description Thaddaeus Tintenfisch editbugs 2014-01-30 17:39:20 CET
Only external panel plugins placed left of the window buttons and close to the left screen seem to be affected by this glitch. Hovering over these panel items with the cursor restores the panel appearance.

xfce4-panel 4.10.0git-d296ca7 (Xfce 4.10)
Xubuntu 14.04 LTS Alpha 2

Related bug report (xfce4-whiskermenu-plugin):
Comment 1 Thaddaeus Tintenfisch editbugs 2015-02-14 15:46:24 CET
This issue is triggered by the following gtk_widget_get_snapshot call:


Requirements for this glitch to occur when dragging a window button:

- panel placed on top 
- show button labels
- any external panel plugin placed leftmost within the panel
Comment 2 Thaddaeus Tintenfisch editbugs 2015-02-20 21:49:28 CET
Created attachment 5969 
Do not use widget snapshot as tasklist draw icon
Comment 3 Harald Judt editbugs 2015-02-21 00:09:43 CET
*** Bug 11567 has been marked as a duplicate of this bug. ***
Comment 4 Graeme Gott editbugs 2015-02-21 14:55:12 CET
*** Bug 11573 has been marked as a duplicate of this bug. ***
Comment 5 Christian Hesse 2015-03-03 15:07:45 CET
Too bad this fix did not make it into 4.12.0...

Works perfectly for me, nevertheles... Thanks!
Comment 6 Thaddaeus Tintenfisch editbugs 2015-05-12 19:02:55 CEST
*** Bug 11897 has been marked as a duplicate of this bug. ***
Comment 7 Thaddaeus Tintenfisch editbugs 2015-05-12 19:04:02 CEST
*** Bug 9096 has been marked as a duplicate of this bug. ***
Comment 8 felix.bau 2015-05-18 21:14:18 CEST
What is the current status?
Comment 9 Christian Hesse 2015-05-18 21:32:45 CEST
Thaddaeus Tintenfisch' patch works perfectly for me.
But it is neither committed to git nor released.
Comment 10 Thaddaeus Tintenfisch editbugs 2015-06-21 10:49:57 CEST
*** Bug 12001 has been marked as a duplicate of this bug. ***
Comment 11 Andrzej editbugs 2015-07-08 00:10:20 CEST
Pushed the patch to git master:
8dc83f5 Do not use widget snapshot as tasklist draw icon
Comment 12 step21 2015-09-02 13:39:41 CEST
On Xubuntu 15.04 with XFCE 4.12, the bug is still active.

There is now no need of the snapshot widget to reproduce the bug.
To reproduce the bug, just boot the Xubuntu ISO as a live-CD into a VirtulBox, open a Thunar window then drag it.
The Whisker button disappears...
Comment 13 Graeme Gott editbugs 2015-10-24 23:07:54 CEST
*** Bug 12275 has been marked as a duplicate of this bug. ***
Comment 14 catai 2016-02-06 12:27:05 CET
Created attachment 6606 
Video of bug (theora ogg)

Mint 17.3 Xfce 4.12 Confirm bug, added details video. Please report to developers. Thanks!
Comment 15 xyzdr4gon333 2016-04-18 20:54:16 CEST
I also have this bug on Debian testing with XFCE 4.12. I would have liked to test Tintenfisch's patch, but I can't get xfce4-whiskermenu-plugin-1.5.2 compiled, because it depends on libxfce4panel-1.0, but I can only find libxfce4panel-2.0 in my repositories. Trying to compile libxfce4panel from source also doesn't work easily, because it depends on garcon-gtk2-1 which doesn't seem to be satisfied with libgarcon-1-0-dev which is the only one I an find in my repository. I get the feeling I first would need to do a Linux from Scratch to compile this, why is that?
Comment 16 w3lifer 2016-10-31 19:46:20 CET
Created attachment 6884 
The black square in right top corner is Whisker Menu.

I have the same bug on my Xubuntu 16.04.1, xfce4-panel 4.12.0 and Whisker Menu.
Comment 17 Christian Hesse 2016-10-31 19:55:53 CET
This has been fixed [0] and version 4.12.1 is no longer suffering this issue.

[0] https://git.xfce.org/xfce/xfce4-panel/commit/?id=8dc83f507d7340fa46c5b8927e5b320c5595fb7d
Comment 18 Simon Steinbeiss editbugs 2017-05-22 21:55:15 CEST
Closing as per comment 17 (which is correct).

Bug #10656

Reported by:
Thaddaeus Tintenfisch
Reported on: 2014-01-30
Last modified on: 2017-05-22
Duplicates (6):
  • 9096 Action buttons partialy hidden after drag and drop application icons
  • 11567 whisker icon disappears when moving elements in xfce4-panel
  • 11573 Icon disappears when moving an item in the panel
  • 11897 Startmenu button gets blacked by drag&dropping taskmenu entries
  • 12001 Menu icon disappears when dragging window buttons
  • 12275 Black background when dragging button of Window Buttons plugin


Nick Schermer
CC List:
13 users




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