Scrolling to line does not work in Firefox

[wch]

With the example below, when the output is viewed in Firefox, hovering over a block in the flame graph does not cause it to scroll to the corresponding line.

library(profvis)
profvis({
    f <- function() {
      pause(1)
    }

    
    
    
    
    
    
    
    
    
    
    
    
   
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    f()
})