Still affecting KDE users on 14.04 LTS.
Here's a workaround I found on the KDE bug tracker:
cat > ~/.kde/env/fix_gtk3.sh << EOF #!/bin/sh export GDK_CORE_DEVICE_EVENTS=1 EOF chmod +x ~/.kde/env/fix_gtk3.sh
Source: https://bugs.kde.org/show_bug.cgi?id=348270#c26
Still affecting KDE users on 14.04 LTS.
Here's a workaround I found on the KDE bug tracker:
cat > ~/.kde/ env/fix_ gtk3.sh << EOF DEVICE_ EVENTS= 1 env/fix_ gtk3.sh
#!/bin/sh
export GDK_CORE_
EOF
chmod +x ~/.kde/
Source: https:/ /bugs.kde. org/show_ bug.cgi? id=348270# c26