new JOSM upload. Aerial image moves, but vector doesn't move with it

I have just uploaded JOSM, first in Chrome and then in Firefox. To validate a roster, I need to zoom in and move the roster east/west or north/south. The aerial image moves when I use my mouse, but the vector is locked. How do I fix this?

When you have uploaded new or edited data to the main OSm dataserver within JOSM, it has nothing to do with Chrome or Firefox.

So please tell us what editor you really have in use, or rephrase your question, please.

@ImeldaJ I’m guessing you’re talking about some sort of HOT task or similar?

By “I have just uploaded JOSM, first in Chrome and then in Firefox” do you actually mean "I’ve used Chrome and Firefox to access a project website, and have invoked JOSM from there.

If so, ask whichever project it is about the problem - they’ll be able to answer the question.