/usr/bin/gnome-shell:11:st_theme_node_get_border_image:st_theme_node_paint_equal:st_widget_recompute_style:st_widget_style_changed:notify_children_of_style_change

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-shell. This problem was most recently seen with package version 3.36.2-1ubuntu1, the problem page at https://errors.ubuntu.com/problem/40c10d17842e966b2b77712dd58f500272d16dd8 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.