Best way for line breaks in the tabular environment when tex2docx?

[JPZ4-5]

Hello! I found it difficult to achieve line breaks in a tabular and have it display correctly in a docx converted using pandoc:

1. Nesting a tabular inside a tabular cell. This method works well in LaTeX, but is recognized by the pandoc as a sub-table within the cell, creating nested tables in the docx, which is not the desired result.
2. Using \makecell{} in the cell. This method seems to not affect the display in LaTeX. However, it is ignored by the filter, resulting in empty cells in generated docx.
3. Using \stackshort{} in the cell. This method seems to directly affect the display in LaTeX, so I did not use it.
4. Using the column type p{width}. This seems difficult to ensure correct line breaks at specified positions across different formats of documents.

An example:

\begin{table}[ht]
\begin{tabular}{ccccc}
\toprule
\diagbox{backbone}{Indicators}                & frame [email protected]  & video [email protected]  & video [email protected] & \makecell{video mAP\\ @0.5:0.95} \\ \midrule
ResNet18&87.29&99.85&66.29&21.20\\
DLA34&\textbf{90.16}&\textbf{100}&\textbf{78.23}&\textbf{24.81}\\
\bottomrule
\end{tabular}
\end{table}

This question seems similar to #9536. Do I also need to write a lua filter myself?
Or is there any simple way to achieve this? After all, I just want to break line in a cell.

In addition, it seems that diagbox is also not supported. Does it also need to be implemented through a lua filter for customization?
Are there any currently supported methods? Thanks very much!

[jgm]

What about putting a minipage inside a tabular cell? That is essentially what we do in pandoc's own LaTeX output.

[JPZ4-5]

Unfortunately, it seems to have failed. Although setting the cell in xelatex to
\begin{minipage}[c]{2cm}video mAP\\ @0.5:0.95\end{minipage}
seems to work effectively, the content in the minipage environment still appears blank in the final output docx without using any filters, as if it has been ignored.

Is it that I'm using the wrong method? Thanks for your time!

[jgm]

This does give me a docx table with a break in it (paragraph break):

\begin{table}[ht]
\begin{tabular}{ccccc}
\toprule
  a & frame [email protected]  & video [email protected]  & video [email protected] &
\begin{minipage}[c]{2cm}video mAP

@0.5:0.95\end{minipage} \\
DLA34&\textbf{90.16}&\textbf{100}&\textbf{78.23}&\textbf{24.81}\\
\bottomrule
\end{tabular}
\end{table}

I'm not sure you can use \\ to get a line break in a minipage as you're doing? Can you confirm by running pdflatex on that? If it works, pandoc should support it. Another alternative in TeX seems to be \newline, which pandoc should but does not currently support. So I just used a paragraph break in the above.

[JPZ4-5]

paragraph break works fine here. Thanks a lot!