When landing on Peachystudio.com or navigating through the site, it appears that multiple versions are loading in the background. So when you click the browser back button it appears nothing is happening when in reality it's going back to the same page that has been loaded multiple times. See screenshot of the history after long clicking the back button. I visited each of the pages only once but it should multiple instances in the dropdown.
Seem your problem just appear your device. Can you please delete storage to re-check again?
Screenshot to refer: https://prnt.sc/11lbfvg