Where the finger swipes function for redo go? – Tayasui Sketches Review

I’ve been using this app for many years so far. One of the best functions of this app was I was able to use redo with my two fingers on my right hand. It was really useful and fast function instead of push the redo (or back to work before) arrow. But ever since this app updated during a week, I am not interested to use this app anymore. What happened????
Review by HowoonK on Tayasui Sketches.