Problem with cross-reference in ioslides_presentation2 from bookdown

[gilberto_sassi]

Hi,

I am starting using rmarkdown and bookdown now, and I'm having problem rendering a presentation using bookdown::ioslides_presentation2.

Here, I include a html_document2 example working perfectly:

---
title: "title"
author: "gilberto"
date: "06/10/2021"
output: bookdown::html_document2
---

# welcome

## section 1

Definition \@ref(def:label).

::: {.definition name="Name" #label}
This is a definition.
:::

And here a example where the cross-reference is not working for

---
title: "title"
author: "gilberto"
date: "06/10/2021"
output: bookdown::ioslides_presentation2
---


# welcome

## section 1

Definition \@ref(def:label).

::: {.definition name="Name" #label}
This is a definition.
:::

Output of my xfun::session_info("bookdown"):

R version 4.1.1 (2021-08-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Garuda Linux

Locale:
LC_CTYPE=pt_BR.UTF-8       LC_NUMERIC=C               LC_TIME=pt_BR.UTF-8
LC_COLLATE=pt_BR.UTF-8     LC_MONETARY=pt_BR.UTF-8    LC_MESSAGES=pt_BR.UTF-8
LC_PAPER=pt_BR.UTF-8       LC_NAME=C                  LC_ADDRESS=C
LC_TELEPHONE=C             LC_MEASUREMENT=pt_BR.UTF-8 LC_IDENTIFICATION=C

Package version:
base64enc_0.1.3 bookdown_0.24.1 digest_0.6.28   evaluate_0.14   fastmap_1.1.0   glue_1.4.2
graphics_4.1.1  grDevices_4.1.1 highr_0.9       htmltools_0.5.2 jquerylib_0.1.4 jsonlite_1.7.2
knitr_1.36      magrittr_2.0.1  methods_4.1.1   rlang_0.4.11    rmarkdown_2.11  stats_4.1.1
stringi_1.7.5   stringr_1.4.0   tinytex_0.34    tools_4.1.1     utils_4.1.1     xfun_0.26
yaml_2.2.1

In the following figure, I show the output in my machine:

[cderv]

I don't think bookdown supports yet to use Theorem and Proof environment with this syntax inside ioslide presentation.

So cross reference won't work because the definition environment is not created.

This would be a feature request in bookdown if you want to open it. Thanks !