When using the gt package, spanners spanners disappear when I make the table interactive with opt_interactive(). Is there a workaround for this?

As a simple example, I use mtcars with an intended spanner. When created without interactivity the spanner displays, when created with interactivity the spanner disappears.

library(gt)
## works fine:
mtcars |> 
  gt() |> 
  tab_spanner(label = "example",
              columns = c(mpg, cyl))

## spanner gone:
mtcars |> 
  gt() |> 
  tab_spanner(label = "example",
              columns = c(mpg, cyl)) |> 
  opt_interactive()