Up and down keys don't work in Chrome

Hi,
We’re having a strange issue with the UP and DOWN keys on Chrome browsers. They’re simply not being captured at all.

Other browsers work fine (tested on Firefox and IE).

I looked for the issue on Google and came up with some old threads from a couple of months ago describing the issue as a Chrome bug, however some of these threads say the problem has been fixed by Google. It hasn’t been fixed for us :frowning:

Does anyone know anything about this issue? Is there a safe work-around?

Thank you very much for reading!

P.S. Flash 5.5 exported to player 10.2