I was playing around with the new update and I found that when amethyst crystals grow on the bottom of the budding block, they remain there even after the budding block is broken.

As you can see in the images attracted, the amethyst on the bottom of the block stays there even after it’s broken. Here is a link to a video of me breaking them and standing on the buds. https://imgur.com/a/jw5kB8T

Hope this solved soon! (Also 1.17 is awesome so far!)