Affinity Designer Shape Builder Tool

[handrawn]

I’m surprised at that, but not surprised I didn’t know. The undo/redo buttons are one of the first things I normally hide when setting up a new user interface. I much prefer using the keyboard shortcuts. The iPad version of AD does have them though, as well as an option to hide them!

You could use the History Panel as a clickable undo/redo option.

I would use edit menu undo/redo with mouse/pen....