@jrasm91 I was debating this as well. Maybe it makes sense to assume that if you want to put a stack asset in an album, you would want all the stack children to go with it.

I think in real-world use case, the user would typically stack similar photos together

From my point of view (not that anyone is asking :D), if an asset is stacked, it should show up everywhere as stacked - timeline, albums, places, people. I personally stack very similar/identical pictures together, so for me the stack represents a single asset that, for one reason or another, I decided to keep multiple copies of. However, I dont want to have my albums (automatically created from folders in an external library) or timeline spammed with multiple similarly looking pictures, hence why I stack them.

Does this change mobile behavior as well?

UPDATE: I see now PR #12279 so it will be changed on mobile as well.

I see this should also fix #6387 and #10135