When I look to the map, changes are not shown correctly. Some tiles are still old. But when I do an refresh (Ctrl+Shift+R) in Firefox, some new tiles becomes old and some old becomes new. And when I do refresh more times in the row, I even got all tiles old.
Initially I thought, that there is some issue with sync of tiles servers, but If I look to the some tile on all tile servers, after some reloads, all are old. My changes are not visible.
I suspect this is to do with the proxies between you and the server. Whilst what you did should override proxies, you may find that one or more of the ISPs in line have very aggressive caching policies. This might be on transparent proxies.