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Created attachment 1116639 [details] ++ demo.cxx `pkg-config --cflags --libs gtk+-3.0` -lX11 Description of problem: changing the WM_CLASS of a window doesn't have an effect of updating the icon selected from the matching .desktop file Version-Release number of selected component (if applicable): gnome-shell-3.18.3-1.fc23.x86_64 How reproducible: 100% Steps to Reproduce: 1. dnf install libreoffice to install the desktop files and icons etc 2. g++ demo.cxx `pkg-config --cflags --libs gtk+-3.0` -lX11 3. ./a.out Actual results: Name of window in top panel changes from "LibreOffice" to "LibreOffice Writer", but the icon shown in the bottom panel remains as the original "startcenter" icon and doesn't change to the "writer" icon Additional info: This is the scenario for LibreOffice which attempts to bundle e.g. "writer" windows together. (https://bugzilla.gnome.org/show_bug.cgi?id=632229 and https://wiki.gnome.org/Projects/GnomeShell/ApplicationBased) But where when there is one window open and its contents closed, the window reverts to a "startcenter" type.
Created attachment 1116640 [details] highlighted screenshot before
Created attachment 1116641 [details] highlighted screenshot after
Created attachment 1116642 [details] what would ideally happen
Its unclear to me if under wayland there is even the theoretical possibility to continue to support one running process impostering as multiple applications.
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Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.