"render nothing: true" does not render exactly nothing

[Aetherus]

Due to some third-party api's need, I need to render EXACTLY nothing (i.e. a response with content length equals precisely to zero), but "render nothing: true" renders responses with content length 1, a single space.

For now, I have to use " render text: '' " instead.

[rafaelfranca]

Yes, we are aware of this. It is because a old Safari bug.

I think we can change this already but I have to check carefully.

[sikachu]

It's being that way to work around a bug in Safari. I'm not sure if we still has that bug, but it was introduced in cb0f8fd and 807df4f

[jeremy]

#14883