Minify HTML on site not working

I have checked minify HTML on my site: https://www.pwa.com.pl/ but it doesnt work. Any idea why?

Validator says everything is OK:
https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.pwa.com.pl%2F

Minification does not remove line breaks. For the rest it does seem to be minified as far as Cloudflare minifies in this context.