I recently noticed that the emails I've been testing to Outlook.com have suddenly, and without warning, been showing 1px white lines in-between the images of the email. Based on the fact that I'm using a design I've used many times in the past with no issue, I'm guessing that this is some issue on the end of Outlook.com, but I wanted to double-check to make sure that's the case. So, has anybody else noticed this recently?