It's not just the advanced features. Even basic features are completely broken. Pressing undo several times can occasionally break out of undoing and start edit

It's not just the advanced features. Even basic features are completely broken. Pressing undo several times can occasionally break out of undoing and start editing your document on your behalf - spewing a slew of "uuuuuu" into your document, which - guess what - ruins any hope you have of reverting back to the original document state.