View render output empty

[Creeall]

The issue comes when invoking view renderWithLayout several times on the same view files.
view->render ob_start + require_once make it empty for the next calls of renderWithLayout supposedly because require_once avoid reloading the files previously loaded in memory. Ob_start don't catch any output, and the final output is empty.

It's mainly used when using renderWithLayout for mail templates.
So you may consider changing require_once by simple require, or include.
Unless you find a better fix.

Cheers.