Issuu seem to have updated their viewer a few days ago. They've obviously wanted to make room for more ads, show related publications and push premium features at the cost of the size of the actual publication. Maybe the layout is more customizable on paid plans (would make sense) but it seems like a big step down for free plans.

Googled a random publication. Here's how the layout used to look, compared to the new one.

What do you think?