It doesn't work on my GNOME 40.0, here is the error report:
Error: No property border_width on GtkBox
Stack trace:
_init/Gtk.Widget.prototype._init@resource:///org/gnome/gjs/modules/core/overrides/Gtk.js:45:40
buildPrefsWidget@/usr/share/gnome-shell/extensions/kimpanel@kde.org/prefs.js:65:17
_init@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:209:40
OpenExtensionPrefsAsync/<@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:122:28
asyncCallback@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:115:22
run@resource:///org/gnome/Shell/Extensions/js/dbusService.js:177:20
main@resource:///org/gnome/Shell/Extensions/js/main.js:19:13
run@resource:///org/gnome/gjs/modules/script/package.js:206:19
start@resource:///org/gnome/gjs/modules/script/package.js:190:8
@/usr/share/gnome-shell/org.gnome.Shell.Extensions:1:17
I have no idea that if this is a issue from upstream, so I post this here.
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