Deux sauts de ligne consécutifs ne fonctionnent pas

I have a discourse instance running at https://foro.brigada.mx, and for some reason posts with two line breaks in a row –

like this –

are being rendered with only one line break. I don’t have the markdown linebreak setting enabled. I haven’t found anything in the docs about this. Here’s an image to show what I mean.

To be clear, this happens both in in the preview to the right of the post and the actual post. Does anyone have an idea why this might be happening?

This appears to be due to custom CSS on the site.

If I visit https://foro.brigada.mx/t/guia-legal-para-inmobiliarias-danadas/24 then I see:

but if I disable custom CSS via https://foro.brigada.mx/safe-mode then it appears properly:

Ahh, that makes sense. Thanks for that Michael!