MEX: no stdout in release

I build my mex file with VS2019. I do my output with

cout << "hi" << endl;

When I build in release version, it outputs fine to matlab's console; in debug build it doesn't.

[Lukas]

Same here. Is there any update on this?

[Zohar]

I use this:

https://github.com/zoharl3/output_viewer