Got the extension to show up by moving it from /usr/lib/epiphany/2.19/extensions to .../2.20/extensions, but it doesn't work. No context menu option, and downloads still use the internal download manager.
Got the extension to show up by moving it from /usr/lib/ epiphany/ 2.19/extensions to .../2.20/ extensions, but it doesn't work. No context menu option, and downloads still use the internal download manager.