"Have you ever ... Had a website or app you love get updated to a new version, and you wished to go back to the old version?" I've wished this about web browse

"Have you ever ... Had a website or app you love get updated to a new version, and you wished to go back to the old version?" I've wished this about web browsers as much as about web sites, but Mozilla seems to be moving in the opposite direction there. I feel that this is not, in fact, a goal of the project at all, but merely an incidental feature of its current architecture.