In the Storyboard Edit View, you can undo an action by clicking the Undo icon in the top toolbar.

Storyboard Edit View

To undo an action in the Image Editor, click the Undo icon or use the keyboard shortcut Command + Z.

Image Editor
In the Storyboard Edit View, you can undo an action by clicking the Undo icon in the top toolbar.
Storyboard Edit View
To undo an action in the Image Editor, click the Undo icon or use the keyboard shortcut Command + Z.
Image Editor