Seems wireshark don't create a .desktop-file:

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<text dest="/usr/share/applications/$NAME.desktop"><![CDATA[[Desktop Entry]
Encoding=UTF-8
Name=Wireshark
Comment=Ethernet / network protocol analyzer
Exec=wireshark
Icon=
Terminal=false
Type=Application
Categories=Application;Network
StartupNotify=true
]]></text>

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