3D markers not shown in RStudio

from community discussion https://community.plot.ly/t/no-markers-on-3d-plots/4125/5

Unique to RStudio Viewer on Windows. External browsers (IE, Edge) work as expected.

```r
p <- plot_ly(x = 1:10, y = 10:1, z = 1:10, type = 'scatter3d', mode = 'markers')
```

Error:
```
TypeError: undefined is not a constructor (evaluating 'ArrayBuffer.isView(t)')   
```
