timeline htmlwidget not rendering properly

Bug description

---
title: "test timeline"
format: 
  dashboard:
    embed-resources: true
    scrolling: false
    nav-buttons:
      - icon: globe
theme: [sandstone, theme/custom2.css]
---

```{r  dataprep}
#| message: false
#| show: false
#| include: false

library(timevis)

countryToCode <- list(
  "Argentina" = "ar",
  "Belgium" = "be",
  "Brazil" = "br",
  "Colombia" = "co",
  "Costa Rica" = "cr",
  "France" = "fr",
  "Germany" = "de",
  "Netherlands" = "nl"
)

# Template for world cup HTML of each item
templateWC <- function(stage, team1, team2, score1, score2) {
  sprintf(
    '<table><tbody>
      <tr><td colspan="3"><em>%s</em></td></tr>
      <tr>
        <td>%s</td>
        <th>&nbsp;%s - %s&nbsp;</th>
        <td>%s</td>
      </tr>
      <tr>
        <td><img src="https://flagpedia.net/data/flags/mini/%s.png" width="31" height="20" alt="%s"></td>
        <th></th>
        <td><img src="https://flagpedia.net/data/flags/mini/%s.png" width="31" height="20" alt="%s"></td>
      </tr>
    </tbody></table>',
    stage, team1, score1, score2, team2, countryToCode[[team1]], team1, countryToCode[[team2]], team2
  )
}

# Data for world cup 2014
dataWC <- data.frame(
  start = c(
    "2014-07-04 13:00",
    "2014-07-04 17:00",
    "2014-07-05 13:00",
    "2014-07-05 17:00",
    "2014-07-08 17:00",
    "2014-07-09 17:00",
    "2014-07-13 16:00"
  ),
  content = c(
    templateWC("quarter-finals", "France", "Germany", 0, 1),
    templateWC("quarter-finals", "Brazil", "Colombia", 2, 1),
    templateWC("quarter-finals", "Argentina", "Belgium", 1, 0),
    templateWC("quarter-finals", "Netherlands", "Costa Rica", "0 (4)", "0 (3)"),
    templateWC("semi-finals", "Brazil", "Germany", 1, 7),
    templateWC("semi-finals", "Netherlands", "Argentina", "0 (2)", "0 (4)"),
    templateWC("final", "Germany", "Argentina", 1, 0)
  ),
  goalsHome = c(0, 2, 1, 4, 1, 2, 1),
  goalsAway = c(1, 1, 0, 3, 7, 4, 0)
)


```


# Timeline (showing as expected)

## Row {height="100%"}

```{r}
#| title: ⏰ timeline


timevis(dataWC)


```



# Timeline 2 (not showing as expected)

## Row {height="100%"}

```{r}
#| title: ⏰ timeline


timevis(dataWC)

```

Steps to reproduce

when I render this above dashboard, the first tab 'timeline' is showing the expected timeline but the second tab is not: the height is incorrect and the data are not displayed properly.

I also tried to save my widget and include it as iframe but same issue when the timevis is not on the first tab...

# Save widget to an HTML file
timevis(dataOB, height = "700px", width = "1800px") %>%
  saveWidget("timevis_widget.html", selfcontained = TRUE)


<iframe src="timevis_widget.html" width="100%" height="600px" style="border:none;">
</iframe>

Actual behavior

No response

Expected behavior

No response

Your environment

No response

Quarto check output

quarto check
Quarto 1.6.42
[✓] Checking environment information...
Quarto cache location: /Users//Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
Pandoc version 3.4.0: OK
Dart Sass version 1.70.0: OK
Deno version 1.46.3: OK
Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
Version: 1.6.42
Path: /Applications/quarto/bin

[✓] Checking tools....................OK
TinyTeX: v2025.01
Chromium: (not installed)

[✓] Checking LaTeX....................OK
Using: TinyTex
Path: /Users//Library/TinyTeX/bin/universal-darwin
Version: 2024

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
Version: 3.9.12 (Conda)
Path: /Users//opt/miniconda3/bin/python
Jupyter: 5.7.2
Kernels: julia-0.5, julia-0.6, python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
Version: 4.0.5
Path: /Users//opt/miniconda3/lib/R
LibPaths:
- /Users//opt/miniconda3/lib/R/library
knitr: 1.40
rmarkdown: 2.16

[✓] Checking Knitr engine render......OK