pdf output plugin renders no columns

[SvenV]

(calibre 2.62.0 portable, on Windows 10)

I want to convert a magazine in epub format to pdf.
Each article's main text is contained in a (css) class, called 'bodyTxt'.

I try to convert it with the following command:
ebook-convert.exe magazine.epub magazine.pdf --paper-size=a4 --extra-css=".bodyTxt { webkit-columns: 190px 2; moz-columns: 190px 2; columns: 190px 2; webkit-column-gap: 25px; moz-column-gap: 25px; column-gap: 25px; }" --sr1-search="[[][ ]" --sr1-replace=[(] -v -v -d calibre_temp

The conversion succeeded and the resulting xhtml documents (in the debug folder 'processed') are rendered with columns by Microsoft Edge.

The resulting pdf document has all the specification I would like it to have, EXCEPT that no text is displayed in 2 columns (all in 1 column).

[Kovid Goyal (kovid)]

PDF output does not support multi-columns, because pagination is done
using columns.

 status wontfix