@olesiak I think it was more of the thumbnails taking more time to load up.
As you can see here:
I added this site to a pinboard
But the thumbnail was blank
Then I added another site with an image in it
And then the first thumbnail had loaded (just noticed) and the second thumbnail did not load on time (it did after a while)
Refreshing did not help
Also it's nice to see that I can change the thumbnail of a pin just like i can do in the bookmarks. I felt like I didn't have the option before. Maybe it's the new update idk.
Also I thought the pinboard thumbnail would be like a collage of the thumbnails of individual pin (like MS Edge Collections and Pinterest) but instead it is the screenshot of the pinboard view. I think the former would look and feel better.