broulik added a comment.
You need to adjust the `config.xml` for that setting to persist. Also, it seems you have pushed an unfinished version of that feature [1] without approval. [1] https://cgit.kde.org/plasma-workspace.git/commit/?id=9923cde1024dc86ab14c200bf745dde308fc9d3f REPOSITORY R120 Plasma Workspace REVISION DETAIL https://phabricator.kde.org/D8441 To: guoyunhe, ngraham Cc: broulik, ngraham, davidedmundson, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart