I'm wondering if I can't reproduce it because of connection speed. I have a similar system and browser versions and i don't see the issue.
Can you post a phone number and I can call you to reproduce the problem and then I can debug it and try to fix it. Fixing web sites is kind of like fixing cars... if you tell the mechanic your car doesn't start and when he turns the key it starts right up then there isn't much he can do. I need to see the problem happen so that when I tinker I can see if it is fixed or not.
So if you post your number I can give you a ring and we can work together to get to the bottom of it and make sure it gets resolved.