addWMSTiles not appearing when using a custom pane

[mtennekes]

This map shows (as expected) an OSM base layer with a WMS layer on top:

leaflet() %>%
	
	setView(lng = 5.287638, lat = 51.703039, zoom = 12) %>%
	addMapPane("myPane", zIndex = 10) %>%
	
	# Defines open-source base maps
	addProviderTiles(group = "OSM", providers$OpenStreetMap) %>%
	
	# Defines bodemgebruik 2017 WMS from PDOK
	addWMSTiles(group = "BBG17",
				baseUrl = "https://service.pdok.nl/cbs/bestandbodemgebruik/2017/wms/v1_0?",
				layers = "bestandbodemgebruik_2017_hoofdgroep",
				options = WMSTileOptions(format = "image/png", transparent = TRUE, crs = "EPSG:4326", interactive = TRUE, minZoom = 7, maxZoom = 15)) %>%
	
	addLayersControl(
		baseGroups = "OSM",
		overlayGroups = "BBG17",
		options = layersControlOptions(collapsed = FALSE)
		
	)

(Note that it may take about 10 seconds before the WMS tiles arrive)

However, when I assign the WMS tile layer to the custom pane, "myPane" it isn't appearing:

leaflet() %>%
	
	setView(lng = 5.287638, lat = 51.703039, zoom = 12) %>%
	addMapPane("myPane", zIndex = 10) %>%
	
	# Defines open-source base maps
	addProviderTiles(group = "OSM", providers$OpenStreetMap) %>%
	
	# Defines bodemgebruik 2017 WMS from PDOK
	addWMSTiles(group = "BBG17",
				baseUrl = "https://service.pdok.nl/cbs/bestandbodemgebruik/2017/wms/v1_0?",
				layers = "bestandbodemgebruik_2017_hoofdgroep",
				options = WMSTileOptions(pane = "myPane", format = "image/png", transparent = TRUE, crs = "EPSG:4326", interactive = TRUE, minZoom = 7, maxZoom = 15)) %>%
	
	addLayersControl(
		baseGroups = "OSM",
		overlayGroups = "BBG17",
		options = layersControlOptions(collapsed = FALSE)
		
	)