When I close and save my kmenuedit changes, the kbuildsycoca process runs as a menu saying "updating system configuration..." since this process isn't something the user really needs to know about it would be better if it launched as a background task and kmenuedit closed the window immediately. Reproducible: Always
Well if you look into the K menu before this is done, your change will be missing and you'll think there's a bug. So this is really a "please wait" dialog. It had three bugs though: - sometimes it would never finish (bug 166792, which I just fixed) - the progress information was misleading (bug 158672, which I just fixed) - a 1s timer at the end, which I removed as part of the fix for the above, https://git.reviewboard.kde.org/r/125318/ In addition, rebuilding sycoca is faster than before and more reliable. With all this being fixed, I think the please-wait dialog makes sense and should be kept. On my system it takes between 1 and 2s.