Hello owomaddie,
I submitted a Modding interface requests for this back in May.
https://forums.factorio.com/viewtopic.php?f=28&t=84635
It is not desired or intended, but the game does not give me the tools/API/prototypes to fix it easily.
If you could, I would greatly appreciate it if you would post to that thread with your desire for that feature so I could fix it in this mod. 😀
Thanks!