The positioning, sizing, etc of things isn’t the issue. Anyone who spends even 5 seconds in the interface can see they can move stuff around. The thing you can’t apparently do is change the actual DESIGN of it. Selecting “UE4 Classic Layout” does not change the design of it, only brings you back to the default UE5 Layout (dunno why they call it UE4 Classic if it’s only similarity is the layout positions of windows).
The issue is the toolbars themselves are designed differently. I, too, am bothered by it. At the very LEAST the main toolbar at the top, which used to have a Blueprints button that made it easy to access the Level Blueprint, was way better in UE4. UE5 doesn’t have an option like that, and from what I can see, has nowhere any mention of loading the level’s blueprint. How am I supposed to make stuff happen from the level’s events (begin play, etc) if I can’t even access the level’s blueprint?
Even the Unreal Engine 5 Documentation still shows Unreal Engine 4’s toolbar designs, as if they hadn’t changed it, while stating it’s Unreal Engine 5. See here if you don’t know what I mean:
The images there are all from UE4, but the page says UE5. I can’t see how that’s not a lie.