Leaflet map html fails to render in browser with AddGraticule() "Uncaught TypeError: can't access property "x", o is undefined"

[jjookkii]

Hello,

Firefox 145.0.2 fails to render saved *.html leaflet map saved from R Studio with htmlwidgets:saveWidget() due to Uncaught TypeError: can't access property "x", o is undefined. The same *.html leaflet map is rendered by previous Firefox versions, Edge browser and R Studio viewer. Something changed in Firefox JS execution to be more sensitive to misc errors.

Map renders without leaflet:AddGraticule() function, but fails with it, thus error likely related to AddGraticule() initialization in browser.
Tested with R 4.1.3, R.4.4.3. leaflet package 2.2.1 & 2.2.3. *.html always seems to fail on the same error in Firefox. Removing AddGraticule() works in Firefox.

Is there some error with leaflet:AddGraticule() implementation?

Firefox console shows error Uncaught TypeError: can't access property "x", o is undefined which is traced to lines with s=o.x in saved *.html page code

intersects:function(t){
  t=b(t);
  var i=this.min,e=this.max,
  n=t.min,o=t.max,
  s=o.x>=i.x&&n.x<=e.x, 
  r=o.y>=i.y&&n.y<=e.y;
  return s&&r
},

#############
# reproducible example in R Studio
#############

library(leaflet)
library(htmlwidgets)

m <- leaflet(options = leafletOptions(
  preferCanvas = T
)) %>%
  addTiles() %>%
  addGraticule(
    interval = 20,
    sphere = FALSE,
    style = list(color = "#333", weight = 1, opacity = 0.25),
    layerId = NULL,
    group = NULL,
    options = pathOptions(pointerEvents = "none", clickable = FALSE)
  )
m # (should show a world map with gridlines)

saveWidget(m, file = "leaflet_map.html", selfcontained = T, title = "AddGraticule")
# test if *.html is rendered the same in browser as in R Studio viewer
# check errors in browser console

[jjookkii]

Update - with newer Firefox 146.0 map is rendered with no issues. Console still shows some problems, but at least map is rendered fully.