trelliscope plot not visible as part of {.tabset} in R-Markdown

[ekoepplin]

Minimal Example:

  ---
  title: "Testme"
  output: html_document
  ---

  ```{r setup, include=FALSE}
  knitr::opts_chunk$set(echo = TRUE)
  ```

  # My Analysis {.tabset}

  ## Some  table

  ```{r pressure, echo=FALSE}
  library(trelliscopejs)
  library(ggplot2)
  library(gapminder)

  head(gapminder)
  ```

  ## trelliscope Plots

  ```{r trelliscope}
  qplot(year, lifeExp, data = gapminder) +
    xlim(1948, 2011) + ylim(10, 95) + theme_bw() +
    facet_trelliscope(~ country + continent, nrow = 2, ncol = 7, width = 300, self_contained = T)
  ```

Here some context:

 > sessionInfo()
  R version 3.5.1 (2018-07-02)
  Platform: x86_64-apple-darwin18.0.0 (64-bit)
  Running under: macOS  10.14.1

  Matrix products: default
  BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
  LAPACK: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib

  locale:
  [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

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

  loaded via a namespace (and not attached):
  [1] Rcpp_1.0.0       rstudioapi_0.7   bindr_0.1.1.9000 knitr_1.21       magrittr_1.5     tidyselect_0.2.5
  [7] munsell_0.5.0    colorspace_1.3-2 R6_2.2.2         rlang_0.3.0.1    plyr_1.8.4       dplyr_0.7.8     
  [13] tools_3.5.1      grid_3.5.1       packrat_0.4.8-1  gtable_0.2.0     xfun_0.4         htmltools_0.3.6 
  [19] digest_0.6.15    yaml_2.2.0       lazyeval_0.2.1   assertthat_0.2.0 tibble_1.4.2     anomalize_0.1.1 
  [25] crayon_1.3.4     bindrcpp_0.2.2   purrr_0.2.5      ggplot2_3.1.0    evaluate_0.12    glue_1.3.0      
  [31] rmarkdown_1.11.2 compiler_3.5.1   pillar_1.3.0     scales_1.0.0     pkgconfig_2.0.2 
  > 

[ekoepplin]

besides that, superb package!