How do I stop page from disappearing in Mobile Chrome browser?

When using a Samsung Galaxy S2 mobile running Chrome, I click the date and time to set up an appointment and that's fine. However, when it goes to fill in the form, when I click and then start typing the first letter in the "Name" field, the rest of the page just disappears - it just shows the name field box and the text being entered. How can I fix this? TIA, Mike