We have been using Zoho Campaigns for over a year, maybe close to two years, and this issue just started happening in the last month. I wanted to wait to see if it would resolve on it's own, and it doesn't seem to be. 

The thumbnail images for all new images, and many older ones, that are uploaded via Image Selector are broken. The actual images are making it into the newsletter builder, so it's not a critical problem. But it's really hard to use the image library now, especially if I want to use a formerly uploaded image. I have to guess for the correct image.

This is happening in Chrome and Firefox. This was the first time I ever opened Zoho Campaigns in Firefox too, so it doesn't look to be a mere browser caching issue. 

If this is a known issue with a solution, please advise.