Here's the text of FB22008758 I've just submitted:
Xcode 26 changed the behavior of the Navigators pane (which hopefully is a bug and not an intended behavior).
in Xcode 26, if I close (or open) the Navigators pane in a window tab, it closes (or opens) the Navigators pane in ALL window tabs. This is insanely horrible, unproductive, time-wasting behavior that breaks workflows that has been established for many years (I've been using Xcode since 2006).
By way of example:
In a window tab that contains a .xib, I prefer the Navigators pane to be closed. While in all other window tabs (that contain code files and other items), I want the Navigators pane to be always displayed.
Before Xcode 26, the Navigators pane was open or closed in each individual window tab as the user desired.
But in Xcode 26, if I close the Navigators pane in one window tab, the pane closes EVERYWHERE. Thus when, for example, I go to a .xib window tab, I have to close the Navigators pane AGAIN. But then when I go back to a code window tab, I have to OPEN the Navigators pane there (because it became closed globally). And have to do this endlessly every day.
WHY???
Please restore the normal, pre-26 behavior of the Navigators pane. That is, the Navigators pane should remain open or closed as PER INDIVIDUAL WINDOW TAB, not globally.
Thank you for your attention to this important issue!