This morning, I was adding some covers to cards. I had the opportunity to specify the look of the cover. For example to have the title over the image (instead of under it), and have the text in regular black or white (for dark images). And have the image cropped nicely into a fixed size.
Since I'm new to Trello, I thought this was default behaviour. A few hours later, I am (apparently) back to the 'old' UI, where I can only upload an image or pick one from Unsplash, but no formatting.
Unfortunately I didn't take any screenshots.
Might I have been given a new UI during A/B testing temporarily?