I have prepare a patch for this bug. Reproducible: Always Steps to Reproduce: 1. Open Desktop settings 2. Make some change in the Wallpaper or in the Mouse Actions 3. Change the category. Actual Results: The message dialog should shown it self. Expected Results: Nothing happens. We are just changing category.
Here is the ticket for the rb. https://git.reviewboard.kde.org/r/123448/
Git commit 8d6a08416f95ce8b346d205fd4bdab3692ce24de by Antonis Tsiapaliokas. Committed on 21/04/2015 at 20:26. Pushed by tsiapaliokas into branch 'master'. Message dialog should always show if we have any pending changes. REVIEW: 123448 M +0 -19 desktoppackage/contents/configuration/AppletConfiguration.qml M +2 -2 desktoppackage/contents/configuration/ConfigCategoryDelegate.qml http://commits.kde.org/plasma-desktop/8d6a08416f95ce8b346d205fd4bdab3692ce24de