Microsoft has announced that the classic designers for app, forms and views are deprecated. The new designers are all accessible by default and generally easier and more intuitive to use. However, if something you do all the time is not available in the new designers, you can still revert to classic to do just that one thing. This is still available but must be enabled by admin on a specific environment. The setting is found in the Power Platform admin center with other Behavior settings. Users/makers will still see the new experiences by default.
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