Am I going insane or can you not delete the lines to measure distance on google maps individually any more?

The google support page for the feature seems to think you can but I can't seem to get it to work.

The nodes on the end of the lines don't show up normally so I can't click on them, it just treats it like I clicked on the map underneath and adds on another line to the distance.

The only way I've found to get the nodes to show up is to drag on a line to change it but then they disappear as soon as I stop doing that.

I feel like I'm probably being incredibly stupid but hopefully somebody can help.