This is a known issue. See on the TKL Issue tracker.

However I just tried the workaround that I previously added to the tracker some time ago and it appears that it isn't working (at least not for me...). I'm not really sure what is going on there as I'm sure that I wouldn't have posted that without testing it first...

So I've done a bit of googling and fiddling but haven't had any joy so far. Unfortunately I can't spend anymore time on it ATM but if you have any success please post back. If not then perhaps we need to temporarily pull the appliance until we can release a proper fix. It's not much good to anyone having a broken appliance available for use...

Sorry that I couldn't give you a better response than that... :(