Note from 2 July 2020
I guess we'll (unfortunately) see a lot of turtles in Firefox soon, while browsing the Web with devtools open… 🐢
JUST LANDED in Firefox Nightly:
Appears when the server response time for a request exceeds the recommended limit of 500 ms (adjustable in about:config).
Awesome dev work by @b4bomsy and planning by @digitarald & @janodvarko!
If you spot it and it helps, let us know!H