Here's the text of FB22001359 I've just submitted:
Xcode 26 changed the behavior of the Inspectors pane (which hopefully is a bug and not an intended behavior).
Now, if I close (or open) the Inspectors pane in a window tab, it closes (or opens) the Inspectors pane in ALL tabs. This is insanely horrible, unproductive, time-wasting behavior that breaks workflows that has been established for many years.
By way of example:
In a window tab that contains a .xib, I always want the Inspectors pane to be open. While in the window tabs that contain code files, I want the Inspectors pane to be closed. (Sometimes I do open it in certain window tabs, when needed).
Before Xcode 26, the Inspectors pane was open or closed in each individual tab as the user desired.
Now, if I close the Inspectors pane in one window tab, the pane closes EVERYWHERE. Thus when, for example, I go to a .xib window tab, I have to open the Inspectors pane AGAIN. But then when I go back to a code window tab, I have to CLOSE the Inspectors pane there (because it became open globally). And have to do this endlessly every day.
WHY???
Please restore the normal, pre-26 behavior of the Inspectors pane. That is, the Inspectors pane should remain open or closed as PER INDIVIDUAL WINDOW TAB, not globally.
Thank you for your attention to this important issue!