htmlwidgets plot preview is showing entire UI

Positron Version:

2024.04.0-1579
Windows 11

Steps to reproduce the issue:

From https://github.com/posit-dev/positron/issues/2843#issuecomment-2088828971

1. Create html widget plots

library(ggplot2)
library(plotly)

df <- data.frame(x = 1:10, y = rnorm(10))
p1 <- ggplot(data = df, mapping = aes(x=x,y=y)) + geom_point() +
theme_bw()
p2 <- ggplotly(p1)
p2

library(dygraphs)
dygraph(nhtemp, main = "New Haven Temperatures") %>% 
  dyRangeSelector(dateWindow = c("1920-01-01", "1960-01-01"))

3. Click through the plots in the plots pane
4. Note the preview image

https://github.com/posit-dev/positron/assets/6433789/281f1871-b3cc-47a9-b34d-6751282d3712

What did you expect to happen?

I expected the previews to be just the plots, not the entire UI

Were there any error messages in the output or Developer Tools console?

No