Set value key on desktop file associated with application (#1826395)

xournalpp.spec

@@ -2,7 +2,7 @@
 
 Name:           xournalpp
 Version:        1.0.18
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Handwriting note-taking software with PDF annotation support
 
 License:        GPLv2+
@@ -68,8 +68,11 @@ sed -i 's|tlh-AA|tlh|g' po/tlh.po
 %make_install
 
 #Remove depreciated key from desktop file
+#Fix desktop file associated with application
 desktop-file-install \
  --remove-key="Encoding" \
+ --set-key="StartupWMClass" \
+ --set-value="xournalpp" \
   %{buildroot}%{_datadir}/applications/com.github.%{name}.%{name}.desktop
 %find_lang %{name}
 
@@ -102,6 +105,9 @@ appstream-util validate-relax --nonet %{buildroot}%{_metainfodir}/com.github.%{n
 %{_datadir}/%{name}/ui
 
 %changelog
+* Tue Apr 21 2020 Luya Tshimbalanga <luya@fedoraproject.org> - 1.0.18-2
+- Set value key on desktop file associated with application (#1826395)
+
 * Thu Apr 16 2020 Fedora Release Monitoring <release-monitoring@fedoraproject.org> - 1.0.18-1
 - Update to 1.0.18 (#1824351)