No connection/kernel and non-zero idle cpu usage

I have a simple locally hosted jupyterlab from the jupyter/datascience-notebook docker image
and even without a browser connected and no kernels loaded I see it consuming cpu time
1-3% every few seconds on x86 and on arm its 7%
the above image shows idle on my arm device then the container loading and then going into it’s idle spikes.
I’ve tried on x86 and arm and no difference. happens on fresh installs also
It didn’t use to do this a a couple months back
is there a new setting I need to change to get it to stop or is it a bug?