Everything KDE from git master with Qt 5.15 on openSUSE Tumbleweed. SUMMARY None of the power/session actions work for me. STEPS TO REPRODUCE 1. Open Kickoff 2. Go to Leave 3. Select any option The logout screen comes up, and I select the current option. Then the logout screen disappears and... nothing happens. :( This is the case no matter how these actions are invoked (e.g. still happens from KRunner). ADDITIONAL INFORMATION This used to happen to me periodically--they would break, but then start working again a little bit later. However right now they are 100% reproducibly broken. Various other KDE developers I talked to recently have said that they periodically experience the same issue.
This got fixed with a big openSUSE upgrade today so I suspect it was them who broke it in the first place. :)