Plotly not rendering in RStudio viewing mode or Shiny but in Browser

I am not able to render a Plotly-plot in my RStudio Viewer mode and in Shiny as well. When i open the plot through RStudio in my browser, the plot renders. The viewer as well as Shiny just show a white space.

d <- diamonds[sample(nrow(diamonds), 1000), ]
plot_ly(d, x = ~carat, y = ~price, text = ~paste("Clarity: ", clarity),
        mode = "markers", color = ~carat, size = ~carat, marker = list(line = list(color = "black")))

When i try to run the code above, i get the following message:
No trace type specified:
Based on info supplied, a 'scatter' trace seems appropriate.
Read more about this trace type -> https://plot.ly/r/reference/#scatter
Warning message:
line.width does not currently support multiple values.

With

plot_ly(economics, x = ~pop, type = "histogram") 

i get no message, but the plot doesnt render too.

Start with the two supplied R reproductions using plot_ly, testing them in the RStudio Viewer, Shiny, and an external browser. Compare the blank Viewer and Shiny output with the browser result and the reported warnings; done means both examples render correctly in the affected contexts.