Comment (by Roland Haas):

I did some more tests and incorporated GRHydro’s PPM ( Ian Hawke, Toni Font, Luca Baiotti, Frank Loeffler) to my test and find that PPM does reconstruction not interpolation.

So WENO (which does interpolation) should be changed.

Attached please find the test code and test output.

‌

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2647/incorrect-weno-coefficient-in-grhydro-weno