When Acrobat is placed in full screen and multiple PDFs are open in tabs, everything works correctly at first — new files open as additional tabs within the same full-screen window. However, when switching between these tabs (for example, clicking from one document tab to another), Acrobat immediately exits full screen and reverts to a standard desktop window.

This behaviour breaks macOS’s Spaces workflow, which is essential for professionals who rely on full-screen app management and gesture-based navigation between programs. It only occurs in Acrobat; other apps remain stable in full screen on Tahoe.

The issue appears to have started after updating to macOS Tahoe 26.0.1, suggesting that Acrobat’s window/tab handling is no longer compatible with the current full-screen API.

Please investigate and restore proper full-screen tab behaviour so that switching between tabs within Acrobat does not cause the application to exit full screen.