- Undo: tap with 2 fingers
- Redo: tap with 3 fingers
- Undo/Redo: hold 2/3 fingers down (continuous)
Here is how to disable the feature:
- Tap the
icon in the top right corner.
- Tap the
Gesture tab icon.
- Scroll down to the History section.
- Remove the
checkmark to disable the feature.