This code shows both scrolling and disappearing table issue with rhandsontable when used with shiny runtime of flexdashboard

flex_rhandsontable_error.Rmd

---
output: 
  flexdashboard::flex_dashboard:
    orientation: columns
    vertical_layout: fill
runtime: shiny
---

```{r setup, include=FALSE}
library(rhandsontable)
```

Column
-----------------------------------------------------------------------

### Chart A

```{r}
rhandsontable(mtcars, width = 700, height = 500)
```

Column
-----------------------------------------------------------------------

### Chart A

```{r}
rHandsontableOutput("TableC")
output$TableC <- renderRHandsontable(mtcars)
```