Huge cell does not split across pages in rmarkdown pdf_document

Hello,

when I try to render a long flextable with rmarkdown and the "pdf_document" format, the table does not split across multiple pages and the cell content gets truncated.

The rendered pdf document is 4 page long:

the first page shows the heading ("Test bug") and nothing else;
the second page is blank;
the table starts in the third page with two consecutive headers (repeated), and the cell contents get printed up to the bottom border of the page
the fourth page shows only the table header

This is a minimal reproducible example of the .Rmd document:

---
documentclass: article
geometry: margin=2cm
output: 
  pdf_document: 
    latex_engine: lualatex
    toc: false
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(
  echo = FALSE, 
  message = FALSE, 
  warning = FALSE,
  ft.tabcolsep = 3, 
  ft.latex.float = "none",
  ft.keepnext = FALSE
)

library(flextable)
library(stringi)

set_flextable_defaults(
  float = "none",
  font.size = 12, 
  border.color = "gray",
  line_spacing = 1,
  padding.bottom = 2,
  na_str = "Not available",
  keep_with_next = FALSE
)

Test bug

loremipsum <- stri_c(stri_rand_lipsum(10), collapse = "\n")
d <- data.frame(
  name = "jack",
  value = loremipsum
)

flextable(d) |> 
  width(j = "name", width = 2) |>
  width(j = "value", width = 4) |>
  valign(valign = "top")


And this is my sessionInfo():

R version 4.2.3 (2023-03-15 ucrt) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 19045)

Matrix products: default

locale: [1] LC_COLLATE=Italian_Italy.utf8 LC_CTYPE=Italian_Italy.utf8 LC_MONETARY=Italian_Italy.utf8 [4] LC_NUMERIC=C LC_TIME=Italian_Italy.utf8

attached base packages: [1] stats graphics grDevices utils datasets methods base

other attached packages: [1] stringi_1.7.12 flextable_0.9.1

loaded via a namespace (and not attached): [1] zip_2.3.0 Rcpp_1.0.10 fontBitstreamVera_0.1.1 [4] compiler_4.2.3 later_1.3.1 gfonts_0.2.0
[7] tools_4.2.3 uuid_1.1-0 digest_0.6.31
[10] evaluate_0.21 jsonlite_1.8.5 lifecycle_1.0.3
[13] rlang_1.1.1 shiny_1.7.4 cli_3.6.1
[16] rstudioapi_0.14 crul_1.4.0 curl_5.0.0
[19] fontLiberation_0.1.0 xfun_0.39 fastmap_1.1.1
[22] xml2_1.3.4 officer_0.6.2 knitr_1.43
[25] gdtools_0.3.3 systemfonts_1.0.4 askpass_1.1
[28] grid_4.2.3 glue_1.6.2 httpcode_0.3.0
[31] data.table_1.14.8 R6_2.5.1 textshaping_0.3.6
[34] rmarkdown_2.22 magrittr_2.0.3 fontquiver_0.2.1
[37] promises_1.2.0.1 htmltools_0.5.5 ellipsis_0.3.2
[40] mime_0.12 xtable_1.8-4 httpuv_1.6.11
[43] ragg_1.2.5 openssl_2.0.6 crayon_1.5.2



Finally, thanks for you great work, this package is awesome!

davidgohel / flextable

Huge cell does not split across pages in rmarkdown pdf_document #548

Test bug