However, it is a fairly standard layout and I get the same cognitive dissonance in other applications as well
I guess I've always just assumed that it is how it is. Not that big a deal and I've never considered it enough of an issue to risk distraction from other developments.
Slightly tricky to know - for me personally, the available width for showing information is important so I guess the question would be whether the clarity from indentation helps more than having space for information display?