The following code is adapted from the official documentation:
:::::::::::::: {.columns align=center}
::: {.column width="40%"}
contents...
:::
::: {.column width="60%"}
contents...
more content
:::
::::::::::::::
I would expect both columns to center vertically.
When running pandoc document.md -t beamer, this outputs (among other things) the line \begin{columns}[T], which aligns the columns at the top, instead of outputting \begin{columns}[c] or just \begin{columns}.
I've tried looking at the code already, but my Haskell and my understanding of pandoc's interna is too bad to understand it.
Am I doing something wrong? Or is this just a bug? Is align=center supposed to do what I think it should?