This can be reproduced consistently by middle-clicking a link, switching to the new tab, and clicking "Edit" in the menubar. Here's a backtrace without and with --g-fatal-warnings (which catches the invalid cast that causes the crash slightly after):
This can be reproduced consistently by middle-clicking a link, switching to the new tab, and clicking "Edit" in the menubar. Here's a backtrace without and with --g-fatal-warnings (which catches the invalid cast that causes the crash slightly after):