Repro:

    ---
    title: "sidebyside"
    format: pdf
    editor: visual
    keep-tex: true
    ---
    
    ```{r}
    #| layout-ncol: 2
    #| layout-valign: bottom
    #| fig-cap: "A plot"
    #| tbl-cap: "A table"
    
    library(knitr)
    
    # plot on the left
    plot(cars)
    
    # table on the right
    kable(head(cars))
    ```

Note the duplicated caption on the figure:

<img width="612" alt="image" src="https://user-images.githubusercontent.com/285675/176945999-376451f8-2e00-41cb-9c9c-720a528ae534.png">

2022-07-01T17:52:14Z
cscheid
Future
open
Repeated figure caption when figure and table captions are mixed
https://github.com/quarto-dev/quarto-cli/issues/1269