1 Answers
Caching can account for this in a lot of cases; where your browser knows it loaded that picture only a few moments ago, so there is no point in contacting the server again to download the same picture so soon.
Pressing CTRL+F5 for a forced reload, using Private/Incognito modes in your browser, using a different browser, or clearing your browsers temporary files are all ways you can test this.
It worked. Thanks.