After burn some project, click on "X" button on top right corner of the burning progress window. Nothing happens. K3b 17.08 beta on Arch.
Git commit 47d665f10651c60869c73a33c5ce3ca3f917d247 by Leslie Zhai. Committed on 08/08/2017 at 03:01. Pushed by lesliezhai into branch 'master'. Fix "X" button from burning progress window does not work issue. M +7 -6 src/k3bjobprogressdialog.cpp https://commits.kde.org/k3b/47d665f10651c60869c73a33c5ce3ca3f917d247
not fixed in k3b 17.08.
fixed in 17.12 beta.