Auto-filling forms doesn't go well with the validation

[midana]

When I click the form at the checkout and choose to auto-fill with an address of mine, all fields fill up. Then when I click on the save-button however it says the last name isn't filled in.  If I go back to the last name with my cursor and click it, enter a space (so it reacts to me writing in the field) and then click on save again - it works.

 

Currently I have turned of auto-fill, but as some of you may know disabling that in Chrome doesn't work fully.

 

Anyone know yet how to fix this problem?