It's not a glitch, it was done on purpose, because a lot of people would hit backspace when filling out a form and lose all their data.
https://www.engadget.com/2016/05/20/...kspace-chrome/
They have created a plugin which will re-enable that functionality, if that's what you want.
https://chrome.google.com/webstore/d...cobagjci?hl=en