Steps to reproduce:
{}{}1. Create a new project and install the "AI Assistant” package
2. Create a new GameObject
3. Open “Assistant” window ( AI > Open Assistant)
4. Enter a “/run undo last action” prompt
5. Press “Run” button
6. Observe that GameObject is removed
7. Enter a “/run redo last action” prompt
8. Press “Run” button
9. Observe the Hierarchy and try redoing the action via keyboard shortcut or context menu

Actual results: Redo action is not executed and last action can no longer be undone via keyboard shortcut and context menu
Expected results: Redo action is executed or last action can be undone via keyboard shortcut and context menu

Reproducible with versions: 1.0.0-pre.5 (6000.2.0b2)
Couldn’t reproduce with versions: 1.0.0-pre.4 (6000.2.0b2) (Due to “Failed command attempt” error in the AI Assistant)

Tested on (OS): macOS Sequoia 15.4 (M4)