If you go to https://github.com/ghc-proposals/ghc-proposals/pull/448, and click on the "rendered" link, namely https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0448-type-variable-scoping.rst, Github is now displaying the .rst source, not the rendered proposal.

This has started happening (consistently across other proposals) today.

Does anyone know why?  How can I fix this?

Simon