I have encountered a situation where two IE8 browsers with the same version number (8.0.6001.18702) are behaving differently when processing a webpage. The problematic one is being used by the client, and despite my efforts, I am unable to reproduce the issue on my machine or our test machine. Interestingly, everything seems to be working fine on Firefox.
What steps can I take to pinpoint what is causing this discrepancy?
Thank you
Edit: It should be noted that clicking on a submit button is expected to submit a form; however, in the client's IE browser, this functionality is not working as intended.