I'm on Xcode 16.2 and often use Command + T
to create a new tab.
However there is always another layer of tabs below it, and I would like to remove it:
To be precise, I would like to remove the layer where "SavedUserProvider" is displayed, but keep the one of top of it that displays two tabs (AppConstants and AppConstants)
It's confusing, because Xcode uses the word "tab" in two different ways (which you have distinguished). Anyway, here's how to do it: In the Navigation prefs pane, change the Navigation Style from Open In Tabs to Open In Place.