Q:

The open source ads preview page is still using the old size; ads appear distorted as a result

As the title says, the Open Source ads preview page at https://meta.stackoverflow.com/ads/display/314722 is still using the old width for each ad, instead of the new 300px width, causing the previews for the ads to be distorted.
Screenshot:

Someone needs to go and update the CSS to reflect the new ad size.

A:

I would suggest removing the height attribute from all of the images while leaving the width attribute. I did it with Chrome and it looks fine.

A:

I've changed the width to 300 and limited the number of ads to 3 per row.
With you in the next build.

So it looks like my fix broke the current ads - this is being reverted till ads for all sites are ready. Better the ads look right though the preview page looks a bit weird for a while.

