[latex parse]

[tlienart]

• {\scal{x, y}\over \sigma} nok
• {\scal{x, y} \over \sigma} ok

here scal is a defined command so it may again be a case of whitespace chomping.

[tlienart]

Actually there is no issue here?

$$\arg\min_{\theta,\sigma}\,\,\sum_{i=1}^n ρ\left({\scal{x_i, \theta} - y_i)\over \sigma}\right) + P(\theta)$$

gives the expected

Closing for now... until can reproduce the initial issue (probably when writing docs for MLJLM