Created attachment 107954 [details] journalctl log journalctl -b -1
I am seeing the same error, but slightly different details. A later plasmashell version and on a 64-bit PC. Journalctl shows: ======== Jan 24 14:49:24 xxx plasmashell[5671]: file:///usr/lib64/qt5/qml/QtQuick/Controls/Button.qml:99: TypeError: Cannot read property 'width' of null ======== This is on a Fedora 27 PC with plasma-workspace-5.11.5-2.fc27.x86_64, and qt5-qtquickcontrols-5.9.2-1.fc27.x86_64
I took a quick look at the Qt bugs and came across this particular problem here: https://bugreports.qt.io/browse/QTBUG-55844?filter=-4&jql=summary%20~%20Button.qml%20order%20by%20created%20DESC As it says it is still unresolved.
Yup, Qt bug.