for few days now, when I want to edit a price or the sku in bulk, after saving they look just like before. Only if I make the changes directly in the product it's working, but it's too much time consuming. Has anyone noticed that? It's temporary?
The product editor currently has a bug. When you edit variants in the bulk editor and the go back to the product, the changes aren't reflected there. But when you reload, the new values are there so they are actually saved correctly in the bulk editor.
What you don't want to do is edit variants in the bulk editor, go back to the product, then (without reloading the page) change and save something on the product, because that will overwrite the variants with the (incorrect) values.