With the new math renderer with default as MathML (as now on mediawiki.org) equations do not appear when switching to VE from the source editor.

First edit in source mode

https://www.mediawiki.org/w/index.php?title=User:Salix_alba&action=edit

then switch to Visual Editor. The mathematical equations do not appear. You can edit the equation but after editing the equation is not visible. Even after save the equations are not visible and it take a reload to make them visible.

I'm using chrome on a Mac.