Due to the new feature to zoom to a layer's contents in Photoshop v21.0.0, it now conflicts with the feature to auto-collapse or expand all of a group's folders by Alt-Clicking on the arrow next to the folder icon. Now, it still does the action, but while zooming into the group at the same time. I like the new feature, but it should only work when alt-clicking on any other part of the layer.
This zoom feature also always stacked like it does now on all layers when the arrow next to Artboard layers were alt-clicked in previous versions. It would zoom and collapse layers under it.