Not sure if it is realated to Node-red, but here goes

[Trying_to_learn]

Sorry folks, but I have to ask somewhere, and here seems as good a place as any because I don't know who or what is causing the problem.

For a long time I have had problems when I re-deploy some machine after editing their flow.

Opening the performance tab I see this:

Ok, I'll byte () Who is that?

It seems to be under the Node-Red scope.

[Steve-Mcl]

i think it's a proxy URL created by/for the ACE editor worker thread. Nothing to be concerned about.

I've seen the same thing in the Monaco editor.

ACE is the code editor you see in the function node.