Fairly simple to understand. EVERY other browser works fine. ONE browser doesn't. Now, where does the issue MOST LIKELY lie? In a script that NO OTHER browser has issue with, or a single browser that has issues? Occam's Razor would indicate the most likely scenario is the singular browser being at fault and not the script that ALL other major browsers have no issues with.Murphy to understand that you just can't be sure when the opposite occurs too (all forums except Xen).
There is just no way to say what is causing it.