Dear Maintainer,

After installing the latest KDE/plasma I had a normal looking desktop but after a restart the taskbar panel either doesn't load
or appears to be 1px wide and unusable. I can hit alt-f2 to start an application but that is all.
If I delete some combination of plasma/kde files in ~/.config and ~/.cache it will work again until the next log in but I've not found exactly which file is responsible.